#6B180D
Closest named color: Reddy Brown (#6E1005). oklch(35% 0.118 31), rgb(107, 24, 13).
Aa
White text reads best on this color (11.92:1).
About this color
#6B180D is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.118 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.011 away. White text reads best on it, at 11.92:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.76:1 |
| White text | 11.92:1 |
Values
| HEX | #6B180D |
| RGB | rgb(107, 24, 13) |
| HSL | hsl(7, 78%, 24%) |
| OKLCH | oklch(35% 0.118 31) |
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 #6B180D | 11.92:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #6B180D | 1.76:1 | Fails | Lc 7.7 | Not readable |
| #6B180D text on white | 11.92:1 | AAA | Lc 96.2 | Preferred for body text |
| #6B180D text on black | 1.76:1 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F8CEC6
oklch(88.5% 0.049 30.7)
-
Step 300
300
#F4AC9E
oklch(80.9% 0.088 31.3)
-
Step 400
400
#EB7B68
oklch(70.6% 0.142 31)
-
Step 500
500
#E2533F
oklch(63.1% 0.182 30.7)
-
Step 600
600
#CD2F1B
oklch(55.5% 0.197 30.9)
-
Step 700
700
#B11F0B
oklch(49.1% 0.183 31.1)
-
Step 800
800
#901E0F
oklch(42.8% 0.152 31)
-
Step 900
900 (this color)
#6B180D
oklch(35% 0.118 31)
-
Step 950
950
#44150E
oklch(27% 0.074 30.9)
#6B180D 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) | #312B0B | 0.126 |
| Deuteranopia (no green cones) | #463E08 | 0.115 |
| Tritanopia (no blue cones) | #770016 | 0.035 |
| Achromatopsia (no color) | #373737 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B180D
#6B180D
oklch(35% 0.118 31)
- #00434C
#00434C
oklch(35.1% 0.061 209.8)
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 #6B180D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.011
- Blood #770001 ΔE 0.030
- Claret #680018 ΔE 0.037
- Chestnut #742802 ΔE 0.042
- Maroon #800000 ΔE 0.045
- Wine Red #7B0323 ΔE 0.048
- Burgundy #610023 ΔE 0.058
- Bordeaux #7B002C ΔE 0.059
Use #6B180D 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.