#6B0308
Closest named color: Reddy Brown (#6E1005). oklch(33.4% 0.133 27), rgb(107, 3, 8).
Aa
White text reads best on this color (12.79:1).
About this color
#6B0308 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.133 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.017 away. White text reads best on it, at 12.79:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.133) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.64:1 |
| White text | 12.79:1 |
Values
| HEX | #6B0308 |
| RGB | rgb(107, 3, 8) |
| HSL | hsl(357, 95%, 22%) |
| OKLCH | oklch(33.4% 0.133 27) |
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 #6B0308 | 12.79:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #6B0308 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #6B0308 text on white | 12.79:1 | AAA | Lc 96.9 | Preferred for body text |
| #6B0308 text on black | 1.64:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FCCCC6
oklch(88.5% 0.055 26.5)
-
Step 300
300
#FBA89E
oklch(81% 0.1 27)
-
Step 400
400
#F47468
oklch(70.8% 0.16 27.3)
-
Step 500
500
#EB453F
oklch(63% 0.204 26.9)
-
Step 600
600
#D70D1B
oklch(55.6% 0.222 27)
-
Step 700
700
#B70012
oklch(49% 0.2 27)
-
Step 800
800
#97050F
oklch(42.7% 0.171 27)
-
Step 900
900 (this color)
#6B0308
oklch(33.4% 0.133 27)
-
Step 950
950
#47100E
oklch(26.9% 0.084 26.6)
#6B0308 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) | #2A2406 | 0.146 |
| Deuteranopia (no green cones) | #423A02 | 0.132 |
| Tritanopia (no blue cones) | #770007 | 0.027 |
| Achromatopsia (no color) | #323232 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B0308
#6B0308
oklch(33.4% 0.133 27)
- #003E45
#003E45
oklch(33.3% 0.057 207.3)
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 #6B0308, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.017
- Claret #680018 ΔE 0.020
- Blood #770001 ΔE 0.027
- Burgundy #610023 ΔE 0.044
- Wine Red #7B0323 ΔE 0.047
- Maroon #800000 ΔE 0.048
- Bordeaux #7B002C ΔE 0.056
- Chestnut #742802 ΔE 0.064
Use #6B0308 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.