#51423D
Closest named color: Charcoal Grey (#3C4142). oklch(39.3% 0.022 39.3), rgb(81, 66, 61).
Aa
White text reads best on this color (9.56:1).
About this color
#51423D is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.037 away. White text reads best on it, at 9.56:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #51423D |
| RGB | rgb(81, 66, 61) |
| HSL | hsl(15, 14%, 28%) |
| OKLCH | oklch(39.3% 0.022 39.3) |
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 #51423D | 9.56:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #51423D | 2.19:1 | Fails | Lc 11.8 | Not readable |
| #51423D text on white | 9.56:1 | AAA | Lc 92.1 | Preferred for body text |
| #51423D text on black | 2.19:1 | Fails | Lc -10.3 | Not readable |
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 900.
-
Step 50
50
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EDE9E7
oklch(93.7% 0.005 48.7)
-
Step 200
200
#DFD7D5
oklch(88.5% 0.009 34.3)
-
Step 300
300
#CBBDB9
oklch(80.9% 0.017 36.5)
-
Step 400
400
#B09B94
oklch(70.6% 0.027 39.3)
-
Step 500
500
#9D837A
oklch(63.2% 0.035 40)
-
Step 600
600
#876C63
oklch(55.5% 0.037 39.3)
-
Step 700
700
#735A52
oklch(49.1% 0.035 38.5)
-
Step 800
800
#5D4A43
oklch(42.7% 0.028 41.2)
-
Step 900
900 (this color)
#51423D
oklch(39.3% 0.022 39.3)
-
Step 950
950
#2D2421
oklch(27% 0.015 39.3)
#51423D 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) | #45433D | 0.021 |
| Deuteranopia (no green cones) | #49463D | 0.018 |
| Tritanopia (no blue cones) | #554041 | 0.013 |
| Achromatopsia (no color) | #454545 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51423D
#51423D
oklch(39.3% 0.022 39.3)
- #39494E
#39494E
oklch(39.4% 0.022 218.8)
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 #51423D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.037
- Purple Brown #673A3F ΔE 0.046
- Onyx #343A40 ΔE 0.059
- Dark Slate Gray #2F4F4F ΔE 0.060
- Mud Brown #60460F ΔE 0.065
- Charcoal #264653 ΔE 0.069
- Dark Grey Blue #29465B ΔE 0.073
- Brownish Purple #76424E ΔE 0.077
Use #51423D 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.