#6D1B21
Closest named color: Reddy Brown (#6E1005). oklch(36% 0.115 21.2), rgb(109, 27, 33).
Aa
White text reads best on this color (11.48:1).
About this color
#6D1B21 is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.115 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.028 away. White text reads best on it, at 11.48:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.115) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.82:1 |
| White text | 11.48:1 |
Values
| HEX | #6D1B21 |
| RGB | rgb(109, 27, 33) |
| HSL | hsl(356, 60%, 27%) |
| OKLCH | oklch(36% 0.115 21.2) |
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 #6D1B21 | 11.48:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #6D1B21 | 1.82:1 | Fails | Lc 8.5 | Not readable |
| #6D1B21 text on white | 11.48:1 | AAA | Lc 95.4 | Preferred for body text |
| #6D1B21 text on black | 1.82:1 | 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
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F7CDCB
oklch(88.4% 0.048 21.3)
-
Step 300
300
#F3ABA8
oklch(80.9% 0.085 21.8)
-
Step 400
400
#EA7B7A
oklch(70.8% 0.137 21.7)
-
Step 500
500
#E05359
oklch(63.2% 0.176 21.2)
-
Step 600
600
#CB2F3E
oklch(55.6% 0.191 21.4)
-
Step 700
700
#AF1F30
oklch(49.1% 0.178 21.4)
-
Step 800
800
#8E1E29
oklch(42.7% 0.147 21.2)
-
Step 900
900 (this color)
#6D1B21
oklch(36% 0.115 21.2)
-
Step 950
950
#431416
oklch(26.9% 0.073 21)
#6D1B21 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) | #322E21 | 0.125 |
| Deuteranopia (no green cones) | #47401F | 0.114 |
| Tritanopia (no blue cones) | #78021E | 0.030 |
| Achromatopsia (no color) | #393939 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D1B21
#6D1B21
oklch(36% 0.115 21.2)
- #00464A
#00464A
oklch(35.9% 0.061 201.3)
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 #6D1B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.028
- Wine Red #7B0323 ΔE 0.035
- Blood #770001 ΔE 0.036
- Claret #680018 ΔE 0.037
- Bordeaux #7B002C ΔE 0.043
- Maroon #800000 ΔE 0.047
- Chestnut #742802 ΔE 0.048
- Burgundy #610023 ΔE 0.052
Use #6D1B21 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.