#642F38
Closest named color: Purple Brown (#673A3F). oklch(37.9% 0.077 10.7), rgb(100, 47, 56).
Aa
White text reads best on this color (10.47:1).
About this color
#642F38 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.077 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.030 away. White text reads best on it, at 10.47:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.00:1 |
| White text | 10.47:1 |
Values
| HEX | #642F38 |
| RGB | rgb(100, 47, 56) |
| HSL | hsl(350, 36%, 29%) |
| OKLCH | oklch(37.9% 0.077 10.7) |
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 #642F38 | 10.47:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #642F38 | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #642F38 text on white | 10.47:1 | AAA | Lc 94.0 | Preferred for body text |
| #642F38 text on black | 2.00:1 | Fails | Lc -8.6 | 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F5E6E7
oklch(93.7% 0.016 12.8)
-
Step 200
200
#EDD1D4
oklch(88.5% 0.032 10.4)
-
Step 300
300
#E3B2B7
oklch(80.9% 0.057 11.6)
-
Step 400
400
#D38893
oklch(70.7% 0.093 10.1)
-
Step 500
500
#C56978
oklch(63% 0.118 10.7)
-
Step 600
600
#B14F61
oklch(55.7% 0.128 10.8)
-
Step 700
700
#973F50
oklch(49% 0.119 10.6)
-
Step 800
800
#7B3542
oklch(42.7% 0.098 10.6)
-
Step 900
900 (this color)
#642F38
oklch(37.9% 0.077 10.7)
-
Step 950
950
#3B1C21
oklch(27.2% 0.049 10.6)
#642F38 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) | #393938 | 0.084 |
| Deuteranopia (no green cones) | #474337 | 0.076 |
| Tritanopia (no blue cones) | #6C2932 | 0.020 |
| Achromatopsia (no color) | #3F3F3F | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642F38
#642F38
oklch(37.9% 0.077 10.7)
- #004D4A
#004D4A
oklch(37.9% 0.065 190.3)
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 #642F38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.030
- Chestnut #742802 ΔE 0.064
- Brownish Purple #76424E ΔE 0.067
- Reddy Brown #6E1005 ΔE 0.070
- Wine Red #7B0323 ΔE 0.071
- Bordeaux #7B002C ΔE 0.072
- Merlot #730039 ΔE 0.074
- Claret #680018 ΔE 0.076
Use #642F38 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.