#51331F
Closest named color: Charcoal Grey (#3C4142). oklch(35.2% 0.054 53.8), rgb(81, 51, 31).
Aa
White text reads best on this color (11.39:1).
About this color
#51331F is a dark, muted brown. In OKLCH its lightness is 35%, its chroma 0.054 and its hue 54°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.063 away. White text reads best on it, at 11.39:1.
| Hue family | Browns |
| Lightness | dark (35%) |
| Chroma | muted (0.054) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.84:1 |
| White text | 11.39:1 |
Values
| HEX | #51331F |
| RGB | rgb(81, 51, 31) |
| HSL | hsl(24, 45%, 22%) |
| OKLCH | oklch(35.2% 0.054 53.8) |
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 #51331F | 11.39:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #51331F | 1.84:1 | Fails | Lc 7.8 | Not readable |
| #51331F text on white | 11.39:1 | AAA | Lc 96.1 | Preferred for body text |
| #51331F text on black | 1.84:1 | Fails | Lc 0.0 | 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
#F8F4F2
oklch(97% 0.005 48.7)
-
Step 100
100
#F0E8E3
oklch(93.6% 0.011 54.5)
-
Step 200
200
#E6D6CC
oklch(88.6% 0.022 54.3)
-
Step 300
300
#D6BAA9
oklch(80.8% 0.04 53.2)
-
Step 400
400
#C1967B
oklch(70.7% 0.064 53.5)
-
Step 500
500
#B17C59
oklch(63.2% 0.082 54.1)
-
Step 600
600
#9C643E
oklch(55.6% 0.09 54)
-
Step 700
700
#855330
oklch(49.1% 0.083 54.5)
-
Step 800
800
#6C4429
oklch(42.7% 0.068 53.9)
-
Step 900
900 (this color)
#51331F
oklch(35.2% 0.054 53.8)
-
Step 950
950
#342216
oklch(27.1% 0.035 54.4)
#51331F 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) | #3C361D | 0.041 |
| Deuteranopia (no green cones) | #433D1F | 0.039 |
| Tritanopia (no blue cones) | #582D2E | 0.036 |
| Achromatopsia (no color) | #3A3A3A | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51331F
#51331F
oklch(35.2% 0.054 53.8)
- #1B4053
#1B4053
oklch(35.4% 0.054 233.5)
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 #51331F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.063
- Onyx #343A40 ΔE 0.067
- Purple Brown #673A3F ΔE 0.068
- Mud Brown #60460F ΔE 0.071
- Dark Olive #373E02 ΔE 0.072
- Chestnut #742802 ΔE 0.072
- Pakistan Green #283618 ΔE 0.077
- Reddy Brown #6E1005 ΔE 0.082
Use #51331F 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.