#6B181D
Closest named color: Reddy Brown (#6E1005). oklch(35.2% 0.116 22.4), rgb(107, 24, 29).
Aa
White text reads best on this color (11.84:1).
About this color
#6B181D is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.116 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.023 away. White text reads best on it, at 11.84:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.116) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.77:1 |
| White text | 11.84:1 |
Values
| HEX | #6B181D |
| RGB | rgb(107, 24, 29) |
| HSL | hsl(356, 63%, 26%) |
| OKLCH | oklch(35.2% 0.116 22.4) |
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 #6B181D | 11.84:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #6B181D | 1.77:1 | Fails | Lc 7.8 | Not readable |
| #6B181D text on white | 11.84:1 | AAA | Lc 96.1 | Preferred for body text |
| #6B181D text on black | 1.77:1 | 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 900.
-
Step 50
50
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F8CDCB
oklch(88.5% 0.049 21.2)
-
Step 300
300
#F4ABA7
oklch(81% 0.087 22.7)
-
Step 400
400
#EB7A78
oklch(70.7% 0.14 22.3)
-
Step 500
500
#E15255
oklch(63.2% 0.178 22.6)
-
Step 600
600
#CC2E3A
oklch(55.6% 0.193 22.6)
-
Step 700
700
#B01D2D
oklch(49.1% 0.18 22.3)
-
Step 800
800
#8F1D26
oklch(42.8% 0.149 22.5)
-
Step 900
900 (this color)
#6B181D
oklch(35.2% 0.116 22.4)
-
Step 950
950
#441415
oklch(27% 0.074 22.3)
#6B181D 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) | #302C1C | 0.126 |
| Deuteranopia (no green cones) | #453E1A | 0.116 |
| Tritanopia (no blue cones) | #76001B | 0.029 |
| Achromatopsia (no color) | #373737 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B181D
#6B181D
oklch(35.2% 0.116 22.4)
- #004449
#004449
oklch(35.2% 0.06 203.1)
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 #6B181D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.023
- Claret #680018 ΔE 0.030
- Blood #770001 ΔE 0.034
- Wine Red #7B0323 ΔE 0.038
- Bordeaux #7B002C ΔE 0.046
- Burgundy #610023 ΔE 0.047
- Maroon #800000 ΔE 0.048
- Chestnut #742802 ΔE 0.051
Use #6B181D 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.