#66011B
Closest named color: Claret (#680018). oklch(32.5% 0.129 16.7), rgb(102, 1, 27).
Aa
White text reads best on this color (13.24:1).
About this color
#66011B is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.129 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.006 away. White text reads best on it, at 13.24:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.58:1 |
| White text | 13.24:1 |
Values
| HEX | #66011B |
| RGB | rgb(102, 1, 27) |
| HSL | hsl(345, 98%, 20%) |
| OKLCH | oklch(32.5% 0.129 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 #66011B | 13.24:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #66011B | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #66011B text on white | 13.24:1 | AAA | Lc 97.7 | Preferred for body text |
| #66011B text on black | 1.58:1 | 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
#FCE3E3
oklch(93.6% 0.028 17.7)
-
Step 200
200
#FBCCCD
oklch(88.6% 0.053 16.8)
-
Step 300
300
#F9A7AA
oklch(80.9% 0.097 17)
-
Step 400
400
#F1737E
oklch(70.6% 0.155 16.5)
-
Step 500
500
#E8465D
oklch(63.1% 0.197 17)
-
Step 600
600
#D31444
oklch(55.6% 0.214 16.7)
-
Step 700
700
#B50036
oklch(49.1% 0.196 16.9)
-
Step 800
800
#94092D
oklch(42.7% 0.166 16.6)
-
Step 900
900 (this color)
#66011B
oklch(32.5% 0.129 16.7)
-
Step 950
950
#461018
oklch(26.9% 0.082 16.2)
#66011B 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) | #25231B | 0.144 |
| Deuteranopia (no green cones) | #3D3718 | 0.131 |
| Tritanopia (no blue cones) | #71000D | 0.031 |
| Achromatopsia (no color) | #303030 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66011B
#66011B
oklch(32.5% 0.129 16.7)
- #003C3E
#003C3E
oklch(32.3% 0.055 198.5)
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 #66011B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.006
- Burgundy #610023 ΔE 0.019
- Reddy Brown #6E1005 ΔE 0.040
- Blood #770001 ΔE 0.048
- Wine Red #7B0323 ΔE 0.050
- Bordeaux #7B002C ΔE 0.053
- Merlot #730039 ΔE 0.055
- Maroon #800000 ΔE 0.066
Use #66011B 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.