#642021
Closest named color: Reddy Brown (#6E1005). oklch(35% 0.098 22.9), rgb(100, 32, 33).
Aa
White text reads best on this color (11.86:1).
About this color
#642021 is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.098 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.034 away. White text reads best on it, at 11.86:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.098) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.77:1 |
| White text | 11.86:1 |
Values
| HEX | #642021 |
| RGB | rgb(100, 32, 33) |
| HSL | hsl(359, 52%, 26%) |
| OKLCH | oklch(35% 0.098 22.9) |
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 #642021 | 11.86:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #642021 | 1.77:1 | Fails | Lc 7.4 | Not readable |
| #642021 text on white | 11.86:1 | AAA | Lc 96.5 | Preferred for body text |
| #642021 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F3CFCD
oklch(88.4% 0.041 21.7)
-
Step 300
300
#EDAEAA
oklch(80.8% 0.075 23)
-
Step 400
400
#E1827E
oklch(70.8% 0.118 23)
-
Step 500
500
#D55E5D
oklch(63% 0.151 22.9)
-
Step 600
600
#C14043
oklch(55.6% 0.165 23)
-
Step 700
700
#A63135
oklch(49.1% 0.153 23)
-
Step 800
800
#872A2C
oklch(42.7% 0.127 23.1)
-
Step 900
900 (this color)
#642021
oklch(35% 0.098 22.9)
-
Step 950
950
#401818
oklch(27% 0.063 22.2)
#642021 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) | #322E20 | 0.105 |
| Deuteranopia (no green cones) | #433D1F | 0.098 |
| Tritanopia (no blue cones) | #6E1121 | 0.029 |
| Achromatopsia (no color) | #373737 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642021
#642021
oklch(35% 0.098 22.9)
- #004348
#004348
oklch(34.9% 0.059 203.2)
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 #642021, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.034
- Claret #680018 ΔE 0.040
- Blood #770001 ΔE 0.050
- Burgundy #610023 ΔE 0.051
- Chestnut #742802 ΔE 0.053
- Wine Red #7B0323 ΔE 0.054
- Bordeaux #7B002C ΔE 0.060
- Maroon #800000 ΔE 0.064
Use #642021 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.