#511B25
Closest named color: Burgundy (#610023). oklch(30.9% 0.081 11.9), rgb(81, 27, 37).
Aa
White text reads best on this color (13.69:1).
About this color
#511B25 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.081 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.045 away. White text reads best on it, at 13.69:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.53:1 |
| White text | 13.69:1 |
Values
| HEX | #511B25 |
| RGB | rgb(81, 27, 37) |
| HSL | hsl(349, 50%, 21%) |
| OKLCH | oklch(30.9% 0.081 11.9) |
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 #511B25 | 13.69:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #511B25 | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #511B25 text on white | 13.69:1 | AAA | Lc 99.8 | Preferred for body text |
| #511B25 text on black | 1.53:1 | 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
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FCE3E5
oklch(93.7% 0.028 12.1)
-
Step 200
200
#FACBD0
oklch(88.4% 0.054 11)
-
Step 300
300
#F8A7B0
oklch(80.9% 0.096 12.1)
-
Step 400
400
#F07387
oklch(70.7% 0.154 11.9)
-
Step 500
500
#E64669
oklch(63.1% 0.196 12.1)
-
Step 600
600
#D21551
oklch(55.7% 0.214 12.1)
-
Step 700
700
#B40042
oklch(49.1% 0.196 12)
-
Step 800
800
#930A36
oklch(42.7% 0.165 12.1)
-
Step 900
900
#76182F
oklch(37.7% 0.128 12.1)
-
Step 950
950 (this color)
#511B25
oklch(30.9% 0.081 11.9)
#511B25 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) | #272725 | 0.090 |
| Deuteranopia (no green cones) | #353124 | 0.081 |
| Tritanopia (no blue cones) | #59131F | 0.021 |
| Achromatopsia (no color) | #2D2D2D | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511B25
#511B25
oklch(30.9% 0.081 11.9)
- #003837
#003837
oklch(30.8% 0.053 192.8)
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 #511B25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.045
- Claret #680018 ΔE 0.055
- Mahogany #4A0100 ΔE 0.063
- Chocolate Brown #411900 ΔE 0.064
- Reddy Brown #6E1005 ΔE 0.070
- Deep Brown #410200 ΔE 0.077
- Dark Plum #3F012C ΔE 0.079
- Aubergine #3D0734 ΔE 0.080
Use #511B25 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.