#511010
Closest named color: Mahogany (#4A0100). oklch(29% 0.096 25.5), rgb(81, 16, 16).
Aa
White text reads best on this color (14.67:1).
About this color
#511010 is a dark, moderately saturated red. In OKLCH its lightness is 29%, its chroma 0.096 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.034 away. White text reads best on it, at 14.67:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.096) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.43:1 |
| White text | 14.67:1 |
Values
| HEX | #511010 |
| RGB | rgb(81, 16, 16) |
| HSL | hsl(0, 67%, 19%) |
| OKLCH | oklch(29% 0.096 25.5) |
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 #511010 | 14.67:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #511010 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #511010 text on white | 14.67:1 | AAA | Lc 100.7 | Preferred for body text |
| #511010 text on black | 1.43:1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2DF
oklch(93.6% 0.032 24.8)
-
Step 200
200
#FFCAC5
oklch(88.4% 0.061 24.6)
-
Step 300
300
#FFA59D
oklch(80.9% 0.108 25.3)
-
Step 400
400
#FE6A63
oklch(70.7% 0.182 25.5)
-
Step 500
500
#F62E36
oklch(63% 0.232 25.5)
-
Step 600
600
#D80020
oklch(55.6% 0.226 25.6)
-
Step 700
700
#B7001A
oklch(49.1% 0.199 25.4)
-
Step 800
800
#980013
oklch(42.8% 0.174 25.6)
-
Step 900
900
#7F0210
oklch(37.7% 0.151 25.3)
-
Step 950
950 (this color)
#511010
oklch(29% 0.096 25.5)
#511010 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) | #231F0F | 0.104 |
| Deuteranopia (no green cones) | #332D0E | 0.094 |
| Tritanopia (no blue cones) | #5A0011 | 0.026 |
| Achromatopsia (no color) | #282828 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511010
#511010
oklch(29% 0.096 25.5)
- #003237
#003237
oklch(28.9% 0.049 205.5)
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 #511010, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.034
- Chocolate Brown #411900 ΔE 0.046
- Burgundy #610023 ΔE 0.050
- Deep Brown #410200 ΔE 0.052
- Claret #680018 ΔE 0.053
- Dark Maroon #3C0008 ΔE 0.065
- Reddy Brown #6E1005 ΔE 0.068
- Dark Brown #341C02 ΔE 0.073
Use #511010 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.