#642E37
Closest named color: Purple Brown (#673A3F). oklch(37.7% 0.078 11.1), rgb(100, 46, 55).
Aa
White text reads best on this color (10.56:1).
About this color
#642E37 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.078 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.032 away. White text reads best on it, at 10.56:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.98:1 |
| White text | 10.56:1 |
Values
| HEX | #642E37 |
| RGB | rgb(100, 46, 55) |
| HSL | hsl(350, 37%, 29%) |
| OKLCH | oklch(37.7% 0.078 11.1) |
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 #642E37 | 10.56:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #642E37 | 1.98:1 | Fails | Lc 9.8 | Not readable |
| #642E37 text on white | 10.56:1 | AAA | Lc 94.1 | Preferred for body text |
| #642E37 text on black | 1.98:1 | Fails | Lc -8.4 | 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
#F5E5E7
oklch(93.5% 0.018 8.8)
-
Step 200
200
#EED1D4
oklch(88.6% 0.033 10.7)
-
Step 300
300
#E4B2B7
oklch(81% 0.059 11.7)
-
Step 400
400
#D48892
oklch(70.7% 0.094 11.2)
-
Step 500
500
#C66877
oklch(63% 0.12 11)
-
Step 600
600
#B24E60
oklch(55.7% 0.131 11.2)
-
Step 700
700
#983E4F
oklch(49% 0.121 11.1)
-
Step 800
800
#7C3441
oklch(42.7% 0.101 11.2)
-
Step 900
900 (this color)
#642E37
oklch(37.7% 0.078 11.1)
-
Step 950
950
#3B1B20
oklch(26.9% 0.051 11.1)
#642E37 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) | #393837 | 0.085 |
| Deuteranopia (no green cones) | #464336 | 0.080 |
| Tritanopia (no blue cones) | #6C2831 | 0.020 |
| Achromatopsia (no color) | #3F3F3F | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642E37
#642E37
oklch(37.7% 0.078 11.1)
- #004C4A
#004C4A
oklch(37.6% 0.065 191.7)
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 #642E37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.032
- Chestnut #742802 ΔE 0.063
- Reddy Brown #6E1005 ΔE 0.068
- Wine Red #7B0323 ΔE 0.069
- Brownish Purple #76424E ΔE 0.069
- Bordeaux #7B002C ΔE 0.071
- Merlot #730039 ΔE 0.072
- Claret #680018 ΔE 0.074
Use #642E37 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.