#510902
Closest named color: Mahogany (#4A0100). oklch(28.1% 0.104 31.3), rgb(81, 9, 2).
Aa
White text reads best on this color (15.10:1).
About this color
#510902 is a dark, moderately saturated red. In OKLCH its lightness is 28%, its chroma 0.104 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.024 away. White text reads best on it, at 15.10:1.
| Hue family | Reds |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.104) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.38:1 |
| White text | 15.10:1 |
Values
| HEX | #510902 |
| RGB | rgb(81, 9, 2) |
| HSL | hsl(5, 95%, 16%) |
| OKLCH | oklch(28.1% 0.104 31.3) |
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 #510902 | 15.10:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #510902 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #510902 text on white | 15.10:1 | AAA | Lc 100.9 | Preferred for body text |
| #510902 text on black | 1.38:1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FFE2DD
oklch(93.5% 0.033 29.4)
-
Step 200
200
#FFCBC1
oklch(88.5% 0.061 30.9)
-
Step 300
300
#FFA695
oklch(80.9% 0.109 31.4)
-
Step 400
400
#FF6A53
oklch(70.6% 0.186 31)
-
Step 500
500
#FB2600
oklch(63.2% 0.244 31.3)
-
Step 600
600
#D41F00
oklch(55.6% 0.215 31.3)
-
Step 700
700
#B31800
oklch(49% 0.189 31.3)
-
Step 800
800
#941200
oklch(42.6% 0.165 31.3)
-
Step 900
900
#7D0D00
oklch(37.7% 0.146 31.2)
-
Step 950
950 (this color)
#510902
oklch(28.1% 0.104 31.3)
#510902 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) | #211C01 | 0.112 |
| Deuteranopia (no green cones) | #322C00 | 0.102 |
| Tritanopia (no blue cones) | #5A0008 | 0.023 |
| Achromatopsia (no color) | #262626 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #510902
#510902
oklch(28.1% 0.104 31.3)
- #002F37
#002F37
oklch(28% 0.049 212.4)
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 #510902, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.024
- Chocolate Brown #411900 ΔE 0.044
- Deep Brown #410200 ΔE 0.044
- Burgundy #610023 ΔE 0.059
- Claret #680018 ΔE 0.059
- Dark Maroon #3C0008 ΔE 0.061
- Reddy Brown #6E1005 ΔE 0.071
- Dark Brown #341C02 ΔE 0.072
Use #510902 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.