#681C21
Closest named color: Reddy Brown (#6E1005). oklch(35.2% 0.108 21.1), rgb(104, 28, 33).
Aa
White text reads best on this color (11.81:1).
About this color
#681C21 is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.108 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.029 away. White text reads best on it, at 11.81:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.108) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.77:1 |
| White text | 11.81:1 |
Values
| HEX | #681C21 |
| RGB | rgb(104, 28, 33) |
| HSL | hsl(356, 58%, 26%) |
| OKLCH | oklch(35.2% 0.108 21.1) |
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 #681C21 | 11.81:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #681C21 | 1.77:1 | Fails | Lc 7.7 | Not readable |
| #681C21 text on white | 11.81:1 | AAA | Lc 96.2 | Preferred for body text |
| #681C21 text on black | 1.77:1 | 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
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F6CECC
oklch(88.5% 0.045 21.4)
-
Step 300
300
#F1ACAA
oklch(80.9% 0.082 20.9)
-
Step 400
400
#E67D7D
oklch(70.6% 0.13 20.9)
-
Step 500
500
#DB585C
oklch(63.1% 0.165 21.3)
-
Step 600
600
#C73742
oklch(55.7% 0.18 21.3)
-
Step 700
700
#AB2734
oklch(49% 0.167 21.1)
-
Step 800
800
#8B232C
oklch(42.7% 0.139 20.8)
-
Step 900
900 (this color)
#681C21
oklch(35.2% 0.108 21.1)
-
Step 950
950
#421617
oklch(27% 0.069 21.5)
#681C21 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) | #312D21 | 0.116 |
| Deuteranopia (no green cones) | #443D1F | 0.107 |
| Tritanopia (no blue cones) | #73071E | 0.030 |
| Achromatopsia (no color) | #373737 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #681C21
#681C21
oklch(35.2% 0.108 21.1)
- #004448
#004448
oklch(35.2% 0.06 201.5)
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 #681C21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.029
- Claret #680018 ΔE 0.034
- Blood #770001 ΔE 0.043
- Wine Red #7B0323 ΔE 0.044
- Burgundy #610023 ΔE 0.047
- Bordeaux #7B002C ΔE 0.051
- Chestnut #742802 ΔE 0.053
- Maroon #800000 ΔE 0.056
Use #681C21 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.