#51150D
Closest named color: Mahogany (#4A0100). oklch(29.6% 0.091 30.7), rgb(81, 21, 13).
Aa
White text reads best on this color (14.35:1).
About this color
#51150D is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.091 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.040 away. White text reads best on it, at 14.35:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.46:1 |
| White text | 14.35:1 |
Values
| HEX | #51150D |
| RGB | rgb(81, 21, 13) |
| HSL | hsl(7, 72%, 18%) |
| OKLCH | oklch(29.6% 0.091 30.7) |
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 #51150D | 14.35:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #51150D | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #51150D text on white | 14.35:1 | AAA | Lc 100.4 | Preferred for body text |
| #51150D text on black | 1.46:1 | 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
#FEE3DD
oklch(93.6% 0.031 32.6)
-
Step 200
200
#FECBC2
oklch(88.4% 0.06 29.9)
-
Step 300
300
#FFA696
oklch(80.9% 0.109 30.7)
-
Step 400
400
#F9705B
oklch(70.7% 0.172 30.7)
-
Step 500
500
#F23C26
oklch(63.2% 0.221 30.7)
-
Step 600
600
#D51900
oklch(55.5% 0.218 30.7)
-
Step 700
700
#B51300
oklch(49.2% 0.193 30.7)
-
Step 800
800
#950E00
oklch(42.6% 0.167 30.7)
-
Step 900
900
#7C0F03
oklch(37.6% 0.144 30.8)
-
Step 950
950 (this color)
#51150D
oklch(29.6% 0.091 30.7)
#51150D 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) | #26220C | 0.096 |
| Deuteranopia (no green cones) | #352F0B | 0.088 |
| Tritanopia (no blue cones) | #5A0414 | 0.032 |
| Achromatopsia (no color) | #2A2A2A | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51150D
#51150D
oklch(29.6% 0.091 30.7)
- #00333B
#00333B
oklch(29.5% 0.051 211.4)
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 #51150D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.040
- Chocolate Brown #411900 ΔE 0.042
- Burgundy #610023 ΔE 0.056
- Claret #680018 ΔE 0.056
- Deep Brown #410200 ΔE 0.058
- Reddy Brown #6E1005 ΔE 0.065
- Dark Brown #341C02 ΔE 0.069
- Dark Maroon #3C0008 ΔE 0.072
Use #51150D 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.