#660A0A
Closest named color: Claret (#680018). oklch(32.8% 0.124 27.6), rgb(102, 10, 10).
Aa
White text reads best on this color (13.02:1).
About this color
#660A0A is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.124 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.021 away. White text reads best on it, at 13.02:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.124) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.61:1 |
| White text | 13.02:1 |
Values
| HEX | #660A0A |
| RGB | rgb(102, 10, 10) |
| HSL | hsl(0, 82%, 22%) |
| OKLCH | oklch(32.8% 0.124 27.6) |
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 #660A0A | 13.02:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #660A0A | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #660A0A text on white | 13.02:1 | AAA | Lc 97.7 | Preferred for body text |
| #660A0A text on black | 1.61:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE4E0
oklch(93.7% 0.027 28.9)
-
Step 200
200
#FACDC7
oklch(88.6% 0.052 27)
-
Step 300
300
#F7AAA0
oklch(81% 0.093 27.5)
-
Step 400
400
#EF786C
oklch(70.7% 0.149 27.4)
-
Step 500
500
#E64D43
oklch(63.1% 0.191 27.6)
-
Step 600
600
#D12423
oklch(55.6% 0.207 27.5)
-
Step 700
700
#B51115
oklch(49.2% 0.193 27.6)
-
Step 800
800
#931615
oklch(42.8% 0.159 27.6)
-
Step 900
900 (this color)
#660A0A
oklch(32.8% 0.124 27.6)
-
Step 950
950
#45130F
oklch(26.9% 0.078 28)
#660A0A 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) | #2A2408 | 0.134 |
| Deuteranopia (no green cones) | #403805 | 0.122 |
| Tritanopia (no blue cones) | #71000C | 0.024 |
| Achromatopsia (no color) | #313131 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660A0A
#660A0A
oklch(32.8% 0.124 27.6)
- #003D44
#003D44
oklch(32.9% 0.057 207.5)
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 #660A0A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.021
- Reddy Brown #6E1005 ΔE 0.022
- Blood #770001 ΔE 0.037
- Burgundy #610023 ΔE 0.041
- Wine Red #7B0323 ΔE 0.055
- Maroon #800000 ΔE 0.058
- Bordeaux #7B002C ΔE 0.064
- Chestnut #742802 ΔE 0.066
Use #660A0A 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.