#511B1A
Closest named color: Chocolate Brown (#411900). oklch(30.6% 0.082 24.2), rgb(81, 27, 26).
Aa
White text reads best on this color (13.80:1).
About this color
#511B1A is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.082 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.050 away. White text reads best on it, at 13.80:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.082) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.52:1 |
| White text | 13.80:1 |
Values
| HEX | #511B1A |
| RGB | rgb(81, 27, 26) |
| HSL | hsl(1, 51%, 21%) |
| OKLCH | oklch(30.6% 0.082 24.2) |
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 #511B1A | 13.80:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #511B1A | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #511B1A text on white | 13.80:1 | AAA | Lc 99.9 | Preferred for body text |
| #511B1A text on black | 1.52:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#F9A8A2
oklch(80.9% 0.097 24.1)
-
Step 400
400
#F27570
oklch(70.8% 0.155 24.1)
-
Step 500
500
#E9484A
oklch(63.2% 0.198 24.2)
-
Step 600
600
#D4182C
oklch(55.6% 0.215 24.2)
-
Step 700
700
#B7001F
oklch(49.1% 0.199 24.3)
-
Step 800
800
#950D1C
oklch(42.8% 0.165 24.1)
-
Step 900
900
#77191C
oklch(37.6% 0.128 24.4)
-
Step 950
950 (this color)
#511B1A
oklch(30.6% 0.082 24.2)
#511B1A 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) | #292619 | 0.087 |
| Deuteranopia (no green cones) | #363119 | 0.080 |
| Tritanopia (no blue cones) | #59101B | 0.025 |
| Achromatopsia (no color) | #2D2D2D | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511B1A
#511B1A
oklch(30.6% 0.082 24.2)
- #00373B
#00373B
oklch(30.7% 0.052 202.7)
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 #511B1A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.050
- Burgundy #610023 ΔE 0.052
- Mahogany #4A0100 ΔE 0.054
- Claret #680018 ΔE 0.055
- Reddy Brown #6E1005 ΔE 0.064
- Deep Brown #410200 ΔE 0.070
- Dark Brown #341C02 ΔE 0.075
- Dark Maroon #3C0008 ΔE 0.082
Use #511B1A 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.