#642F33
Closest named color: Purple Brown (#673A3F). oklch(37.7% 0.076 16.7), rgb(100, 47, 51).
Aa
White text reads best on this color (10.51:1).
About this color
#642F33 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.076 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.031 away. White text reads best on it, at 10.51:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.99:1 |
| White text | 10.51:1 |
Values
| HEX | #642F33 |
| RGB | rgb(100, 47, 51) |
| HSL | hsl(355, 36%, 29%) |
| OKLCH | oklch(37.7% 0.076 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 #642F33 | 10.51:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #642F33 | 1.99:1 | Fails | Lc 9.9 | Not readable |
| #642F33 text on white | 10.51:1 | AAA | Lc 94.1 | Preferred for body text |
| #642F33 text on black | 1.99:1 | Fails | Lc -8.5 | 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
#FBF3F3
oklch(97% 0.009 17.3)
-
Step 100
100
#F5E6E6
oklch(93.7% 0.016 17.4)
-
Step 200
200
#EED1D2
oklch(88.5% 0.033 15.4)
-
Step 300
300
#E3B2B3
oklch(80.8% 0.057 17)
-
Step 400
400
#D4898C
oklch(70.8% 0.092 17)
-
Step 500
500
#C66A70
oklch(63.1% 0.117 16.9)
-
Step 600
600
#B15058
oklch(55.6% 0.127 17.1)
-
Step 700
700
#984048
oklch(49.1% 0.118 17)
-
Step 800
800
#7C353B
oklch(42.7% 0.099 17.1)
-
Step 900
900 (this color)
#642F33
oklch(37.7% 0.076 16.7)
-
Step 950
950
#3B1C1E
oklch(27.1% 0.049 16.8)
#642F33 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) | #3A3933 | 0.083 |
| Deuteranopia (no green cones) | #474332 | 0.077 |
| Tritanopia (no blue cones) | #6D2831 | 0.022 |
| Achromatopsia (no color) | #3F3F3F | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642F33
#642F33
oklch(37.7% 0.076 16.7)
- #004C4D
#004C4D
oklch(37.8% 0.064 196.3)
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 #642F33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.031
- Chestnut #742802 ΔE 0.057
- Reddy Brown #6E1005 ΔE 0.065
- Brownish Purple #76424E ΔE 0.070
- Wine Red #7B0323 ΔE 0.070
- Bordeaux #7B002C ΔE 0.073
- Claret #680018 ΔE 0.074
- Blood #770001 ΔE 0.076
Use #642F33 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.