#51231B
Closest named color: Chocolate Brown (#411900). oklch(32% 0.071 31.4), rgb(81, 35, 27).
Aa
White text reads best on this color (13.07:1).
About this color
#51231B is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.071 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.055 away. White text reads best on it, at 13.07:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.071) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.60:1 |
| White text | 13.07:1 |
Values
| HEX | #51231B |
| RGB | rgb(81, 35, 27) |
| HSL | hsl(9, 50%, 21%) |
| OKLCH | oklch(32% 0.071 31.4) |
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 #51231B | 13.07:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #51231B | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #51231B text on white | 13.07:1 | AAA | Lc 99.0 | Preferred for body text |
| #51231B text on black | 1.60:1 | 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 950.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F7CFC6
oklch(88.6% 0.047 32.8)
-
Step 300
300
#F2AD9F
oklch(80.9% 0.084 31.8)
-
Step 400
400
#E87E6B
oklch(70.7% 0.135 31.3)
-
Step 500
500
#DE5842
oklch(63.1% 0.172 31.6)
-
Step 600
600
#C93721
oklch(55.6% 0.186 31.6)
-
Step 700
700
#AE2713
oklch(49.2% 0.174 31.5)
-
Step 800
800
#8D2313
oklch(42.7% 0.144 31.6)
-
Step 900
900
#712418
oklch(37.7% 0.111 31.5)
-
Step 950
950 (this color)
#51231B
oklch(32% 0.071 31.4)
#51231B 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) | #2F2B1A | 0.072 |
| Deuteranopia (no green cones) | #3A341A | 0.066 |
| Tritanopia (no blue cones) | #591B21 | 0.027 |
| Achromatopsia (no color) | #313131 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51231B
#51231B
oklch(32% 0.071 31.4)
- #003A43
#003A43
oklch(32% 0.056 211.6)
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 #51231B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.055
- Claret #680018 ΔE 0.064
- Reddy Brown #6E1005 ΔE 0.065
- Burgundy #610023 ΔE 0.066
- Mahogany #4A0100 ΔE 0.070
- Dark Brown #341C02 ΔE 0.077
- Chestnut #742802 ΔE 0.082
- Blood #770001 ΔE 0.085
Use #51231B 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.