#4C636A
Closest named color: Slate (#516572). oklch(48.4% 0.03 218.4), rgb(76, 99, 106).
Aa
White text reads best on this color (6.36:1).
About this color
#4C636A is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.015 away. White text reads best on it, at 6.36:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.30:1 |
| White text | 6.36:1 |
Values
| HEX | #4C636A |
| RGB | rgb(76, 99, 106) |
| HSL | hsl(194, 16%, 36%) |
| OKLCH | oklch(48.4% 0.03 218.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #4C636A | 6.36:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #4C636A | 3.30:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #4C636A text on white | 6.36:1 | AA | Lc 81.6 | Fine for body text |
| #4C636A text on black | 3.30:1 | AA large text | Lc -20.2 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADD
oklch(88.5% 0.008 228.9)
-
Step 300
300
#B7C3C7
oklch(80.9% 0.014 219.6)
-
Step 400
400
#91A4AA
oklch(70.6% 0.023 218.7)
-
Step 500
500
#768E95
oklch(63% 0.029 217.3)
-
Step 600
600
#5F7880
oklch(55.6% 0.032 219.3)
-
Step 700
700 (this color)
#4C636A
oklch(48.4% 0.03 218.4)
-
Step 800
800
#405258
oklch(42.6% 0.024 220.1)
-
Step 900
900
#364448
oklch(37.6% 0.019 217)
-
Step 950
950
#20282A
oklch(27% 0.012 214.5)
#4C636A with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5E616A | 0.026 |
| Deuteranopia (no green cones) | #5A5E6A | 0.024 |
| Tritanopia (no blue cones) | #436665 | 0.018 |
| Achromatopsia (no color) | #5F5F5F | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C636A
#4C636A
oklch(48.4% 0.03 218.4)
- #6E5953
#6E5953
oklch(48.3% 0.029 36.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #4C636A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.015
- YInMn Blue #415A77 ΔE 0.043
- Dusty Grape #545775 ΔE 0.047
- Dim Gray #696969 ΔE 0.048
- Dark Aqua #05696B ΔE 0.054
- Denim #3B638C ΔE 0.058
- Dark Green Blue #1F6357 ΔE 0.059
- Petrol #005F6A ΔE 0.062
Use #4C636A in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.