Codes & values
- Color Name
Slate - Color ID
KDF-C-06583435 - HEX
#64748B - RGB
rgb(100, 116, 139) - RGBA
rgba(100, 116, 139, 1) - HSL
hsl(215, 16%, 47%) - HSLA
hsla(215, 16%, 47%, 1) - HSV / HSB
hsv(215, 28%, 55%) - CMYK
cmyk(28%, 17%, 0%, 45%) - Light / Dark
mid
Quick answers
- What is the HEX code for Slate?
- #64748B
- What is Slate RGB?
- rgb(100, 116, 139)
- What is Slate HSL?
- hsl(215, 16%, 47%)
- What is Slate CMYK?
- cmyk(28%, 17%, 0%, 45%)
What is Slate?
Slate is a curated blue family color at #64748B. It appears in our library with tags for ui, branding, design, web. This mid-range shade works as a primary brand or UI accent when contrast with text is verified. Temperature lean: cool — calmer, often used for tech, healthcare, and finance trust..
Slate HEX code
The HEX code for Slate is #64748B. Paste it into CSS as color: #64748B; or background-color: #64748B;. Design tools accept the same six-digit value without the # prefix (64748b).
Slate RGB
Slate in RGB is rgb(100, 116, 139) (channels R 100, G 116, B 139). Use RGB when you need opacity via rgba(100, 116, 139, 1).
Slate HSL & HSV
HSL is hsl(215, 16%, 47%) — useful for generating lighter/darker variants by adjusting lightness. HSV/HSB is hsv(215, 28%, 55%), closer to how many digital pickers expose hue, saturation, and brightness.
Slate CMYK
Approximate CMYK for Slate is cmyk(28%, 17%, 0%, 45%). Screen HEX/RGB values are device-dependent; for print, always soft-proof in your print profile rather than relying on a web conversion alone.
Shades of Slate
Darker shades (mixed toward black): #536174, #434D5D, #323A46, #21272E, #111317. Use deeper shades for hover states, borders, and dark-mode accents.
Tints of Slate
Lighter tints (mixed toward white): #7E8B9E, #98A2B2, #B2BAC5, #CBD1D8, #E5E8EC. Tints work well for soft backgrounds, chips, and secondary buttons.
Colors that go with Slate
Complementary pairing: #64748B, #8B7B64. Analogous neighbors: #64888B, #64748B, #67648B. Triadic accents: #64748B, #8B6474, #748B64. Always check text contrast when pairing.
Slate color combinations
A practical combo: primary #64748B, complementary accent #8B7B64, and a neutral charcoal or off-white for text and surfaces. Split-complementary options: #64748B, #8B6764, #888B64.
Slate in web design
Blue remains the default trust color for SaaS, finance, and health UI. Royal and navy blues anchor headers; sky blues soften backgrounds and links.
Slate in branding
Brand blues communicate reliability. Royal blue and navy remain corporate staples; electric blue reads more startup. Contrast vs white is 4.76:1 (passes WCAG AA for normal text); vs black 4.41:1.
Slate earth & muted use
Slate leans muted or earthy — ideal for interiors, craft brands, and calm UI. Combine with cream, sage, and clay neutrals.
Frequently asked questions
- What is the HEX code for Slate?
- Slate: #64748B.
- What is Slate RGB?
- Slate: rgb(100, 116, 139).
- What is Slate HSL?
- Slate: hsl(215, 16%, 47%).
- What is Slate CMYK?
- Slate: cmyk(28%, 17%, 0%, 45%).
- What colors go with Slate?
- Try complementary #64748B, #8B7B64 or analogous #64888B, #64748B, #67648B.
- Is Slate good for text on white?
- Yes — contrast 4.76:1 meets WCAG AA for normal text.
Accessibility snapshot
Contrast vs white: 4.76:1 (AA body text pass). Contrast vs black: 4.41:1. Complementary swatch: #64748B, #8B7B64.
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