#660D1F
Closest named color: Claret (#680018). oklch(33.3% 0.12 16.7), rgb(102, 13, 31).
Aa
White text reads best on this color (12.78:1).
About this color
#660D1F is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.120 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.013 away. White text reads best on it, at 12.78:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.120) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.64:1 |
| White text | 12.78:1 |
Values
| HEX | #660D1F |
| RGB | rgb(102, 13, 31) |
| HSL | hsl(348, 77%, 23%) |
| OKLCH | oklch(33.3% 0.12 16.7) |
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 #660D1F | 12.78:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #660D1F | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #660D1F text on white | 12.78:1 | AAA | Lc 97.5 | Preferred for body text |
| #660D1F 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E4
oklch(93.6% 0.026 14.7)
-
Step 200
200
#F9CCCD
oklch(88.4% 0.051 16.7)
-
Step 300
300
#F5A9AC
oklch(80.9% 0.09 16.6)
-
Step 400
400
#EC7780
oklch(70.6% 0.144 16.7)
-
Step 500
500
#E34D61
oklch(63.1% 0.185 16.5)
-
Step 600
600
#CE2647
oklch(55.6% 0.2 16.9)
-
Step 700
700
#B21339
oklch(49.1% 0.187 16.7)
-
Step 800
800
#90172F
oklch(42.7% 0.154 16.9)
-
Step 900
900 (this color)
#660D1F
oklch(33.3% 0.12 16.7)
-
Step 950
950
#441319
oklch(27% 0.075 16.6)
#660D1F 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) | #28261F | 0.135 |
| Deuteranopia (no green cones) | #3F391C | 0.123 |
| Tritanopia (no blue cones) | #710015 | 0.026 |
| Achromatopsia (no color) | #323232 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660D1F
#660D1F
oklch(33.3% 0.12 16.7)
- #003F40
#003F40
oklch(33.3% 0.057 196.6)
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 #660D1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.013
- Burgundy #610023 ΔE 0.024
- Reddy Brown #6E1005 ΔE 0.035
- Blood #770001 ΔE 0.046
- Wine Red #7B0323 ΔE 0.046
- Bordeaux #7B002C ΔE 0.050
- Merlot #730039 ΔE 0.052
- Maroon #800000 ΔE 0.063
Use #660D1F 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.