#51453B
Closest named color: Charcoal Grey (#3C4142). oklch(40% 0.023 61.9), rgb(81, 69, 59).
Aa
White text reads best on this color (9.27:1).
About this color
#51453B is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.041 away. White text reads best on it, at 9.27:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #51453B |
| RGB | rgb(81, 69, 59) |
| HSL | hsl(27, 16%, 27%) |
| OKLCH | oklch(40% 0.023 61.9) |
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 #51453B | 9.27:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #51453B | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #51453B text on white | 9.27:1 | AAA | Lc 91.4 | Preferred for body text |
| #51453B text on black | 2.26:1 | Fails | Lc -11.0 | 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
#ECE9E6
oklch(93.6% 0.005 67.8)
-
Step 200
200
#DED8D3
oklch(88.6% 0.009 62.6)
-
Step 300
300
#C9BEB5
oklch(80.8% 0.018 61.9)
-
Step 400
400
#AE9D8F
oklch(70.7% 0.028 61.8)
-
Step 500
500
#9A8574
oklch(63.1% 0.036 61.1)
-
Step 600
600
#846F5C
oklch(55.6% 0.039 64)
-
Step 700
700
#705C4C
oklch(49% 0.036 60.5)
-
Step 800
800
#5B4C3E
oklch(42.8% 0.03 64.9)
-
Step 900
900 (this color)
#51453B
oklch(40% 0.023 61.9)
-
Step 950
950
#2C251F
oklch(27% 0.015 62.7)
#51453B 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) | #49463A | 0.014 |
| Deuteranopia (no green cones) | #4C483B | 0.012 |
| Tritanopia (no blue cones) | #554342 | 0.017 |
| Achromatopsia (no color) | #474747 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51453B
#51453B
oklch(40% 0.023 61.9)
- #3D4953
#3D4953
oklch(39.9% 0.023 243.5)
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 #51453B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.041
- Purple Brown #673A3F ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.056
- Mud Brown #60460F ΔE 0.057
- Onyx #343A40 ΔE 0.066
- Charcoal #264653 ΔE 0.071
- Green Brown #544E03 ΔE 0.073
- Dark Grey Blue #29465B ΔE 0.076
Use #51453B 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.