#671B0B
Closest named color: Reddy Brown (#6E1005). oklch(34.6% 0.111 33.5), rgb(103, 27, 11).
Aa
White text reads best on this color (12.08:1).
About this color
#671B0B is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.111 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.019 away. White text reads best on it, at 12.08:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.111) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.73:1 |
| White text | 12.08:1 |
Values
| HEX | #671B0B |
| RGB | rgb(103, 27, 11) |
| HSL | hsl(10, 81%, 22%) |
| OKLCH | oklch(34.6% 0.111 33.5) |
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 #671B0B | 12.08:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #671B0B | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #671B0B text on white | 12.08:1 | AAA | Lc 96.6 | Preferred for body text |
| #671B0B text on black | 1.73:1 | 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
#FAE5E0
oklch(93.7% 0.024 33.5)
-
Step 200
200
#F6CFC6
oklch(88.5% 0.046 33.2)
-
Step 300
300
#F1AD9E
oklch(80.8% 0.083 32.8)
-
Step 400
400
#E77F68
oklch(70.7% 0.133 33.5)
-
Step 500
500
#DD593E
oklch(63.1% 0.171 33.3)
-
Step 600
600
#C83919
oklch(55.6% 0.185 33.7)
-
Step 700
700
#AD2909
oklch(49.1% 0.173 33.6)
-
Step 800
800
#8C240E
oklch(42.6% 0.143 33.3)
-
Step 900
900 (this color)
#671B0B
oklch(34.6% 0.111 33.5)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
#671B0B 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) | #322B08 | 0.115 |
| Deuteranopia (no green cones) | #443C07 | 0.106 |
| Tritanopia (no blue cones) | #720018 | 0.041 |
| Achromatopsia (no color) | #363636 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #671B0B
#671B0B
oklch(34.6% 0.111 33.5)
- #00414C
#00414C
oklch(34.5% 0.06 213.4)
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 #671B0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.019
- Blood #770001 ΔE 0.039
- Claret #680018 ΔE 0.041
- Chestnut #742802 ΔE 0.044
- Maroon #800000 ΔE 0.054
- Wine Red #7B0323 ΔE 0.057
- Burgundy #610023 ΔE 0.059
- Bordeaux #7B002C ΔE 0.068
Use #671B0B 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.