#6D181C
Closest named color: Reddy Brown (#6E1005). oklch(35.6% 0.118 23.3), rgb(109, 24, 28).
Aa
White text reads best on this color (11.68:1).
About this color
#6D181C is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.118 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.021 away. White text reads best on it, at 11.68:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.79:1 |
| White text | 11.68:1 |
Values
| HEX | #6D181C |
| RGB | rgb(109, 24, 28) |
| HSL | hsl(357, 64%, 26%) |
| OKLCH | oklch(35.6% 0.118 23.3) |
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 #6D181C | 11.68:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #6D181C | 1.79:1 | Fails | Lc 8.2 | Not readable |
| #6D181C text on white | 11.68:1 | AAA | Lc 95.7 | Preferred for body text |
| #6D181C text on black | 1.79:1 | 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
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDCA
oklch(88.4% 0.049 22.8)
-
Step 300
300
#F5AAA6
oklch(80.9% 0.089 22.6)
-
Step 400
400
#EC7976
oklch(70.7% 0.143 22.9)
-
Step 500
500
#E25052
oklch(63% 0.182 23.2)
-
Step 600
600
#CD2B37
oklch(55.5% 0.197 23.1)
-
Step 700
700
#B11A29
oklch(49% 0.183 23.3)
-
Step 800
800
#901B23
oklch(42.7% 0.152 23.4)
-
Step 900
900 (this color)
#6D181C
oklch(35.6% 0.118 23.3)
-
Step 950
950
#441414
oklch(27% 0.074 23.5)
#6D181C 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) | #312D1B | 0.129 |
| Deuteranopia (no green cones) | #463F19 | 0.118 |
| Tritanopia (no blue cones) | #78001A | 0.029 |
| Achromatopsia (no color) | #383838 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D181C
#6D181C
oklch(35.6% 0.118 23.3)
- #00454A
#00454A
oklch(35.6% 0.061 203)
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 #6D181C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.021
- Blood #770001 ΔE 0.031
- Claret #680018 ΔE 0.033
- Wine Red #7B0323 ΔE 0.036
- Maroon #800000 ΔE 0.044
- Bordeaux #7B002C ΔE 0.044
- Chestnut #742802 ΔE 0.048
- Burgundy #610023 ΔE 0.051
Use #6D181C 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.