#66242A
Closest named color: Reddy Brown (#6E1005). oklch(36.1% 0.095 17.8), rgb(102, 36, 42).
Aa
White text reads best on this color (11.34:1).
About this color
#66242A is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.095 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.044 away. White text reads best on it, at 11.34:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.095) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.85:1 |
| White text | 11.34:1 |
Values
| HEX | #66242A |
| RGB | rgb(102, 36, 42) |
| HSL | hsl(355, 48%, 27%) |
| OKLCH | oklch(36.1% 0.095 17.8) |
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 #66242A | 11.34:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #66242A | 1.85:1 | Fails | Lc 8.4 | Not readable |
| #66242A text on white | 11.34:1 | AAA | Lc 95.5 | Preferred for body text |
| #66242A text on black | 1.85:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E5
oklch(93.6% 0.02 17.5)
-
Step 200
200
#F2CFCF
oklch(88.4% 0.039 17.9)
-
Step 300
300
#EBAFAF
oklch(80.9% 0.07 18.7)
-
Step 400
400
#DF8286
oklch(70.8% 0.115 17.6)
-
Step 500
500
#D35F68
oklch(63.1% 0.147 17.5)
-
Step 600
600
#BE424F
oklch(55.6% 0.159 17.9)
-
Step 700
700
#A33340
oklch(49% 0.147 17.8)
-
Step 800
800
#852C35
oklch(42.8% 0.122 18.1)
-
Step 900
900 (this color)
#66242A
oklch(36.1% 0.095 17.8)
-
Step 950
950
#3F191B
oklch(27.1% 0.059 18.7)
#66242A 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) | #34322A | 0.103 |
| Deuteranopia (no green cones) | #453F28 | 0.094 |
| Tritanopia (no blue cones) | #701827 | 0.026 |
| Achromatopsia (no color) | #3A3A3A | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66242A
#66242A
oklch(36.1% 0.095 17.8)
- #004749
#004749
oklch(36.1% 0.061 198)
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 #66242A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.044
- Claret #680018 ΔE 0.049
- Wine Red #7B0323 ΔE 0.053
- Chestnut #742802 ΔE 0.054
- Purple Brown #673A3F ΔE 0.055
- Blood #770001 ΔE 0.056
- Bordeaux #7B002C ΔE 0.057
- Burgundy #610023 ΔE 0.057
Use #66242A 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.