#642831
Closest named color: Purple Brown (#673A3F). oklch(36.5% 0.087 13.2), rgb(100, 40, 49).
Aa
White text reads best on this color (11.11:1).
About this color
#642831 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.087 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.046 away. White text reads best on it, at 11.11:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.087) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.88:1 |
| White text | 11.11:1 |
Values
| HEX | #642831 |
| RGB | rgb(100, 40, 49) |
| HSL | hsl(351, 43%, 27%) |
| OKLCH | oklch(36.5% 0.087 13.2) |
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 #642831 | 11.11:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #642831 | 1.88:1 | Fails | Lc 8.7 | Not readable |
| #642831 text on white | 11.11:1 | AAA | Lc 95.2 | Preferred for body text |
| #642831 text on black | 1.88:1 | Fails | Lc -7.4 | 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
#F6E5E6
oklch(93.6% 0.019 13.4)
-
Step 200
200
#F0D0D2
oklch(88.5% 0.036 13.6)
-
Step 300
300
#E8B0B4
oklch(81% 0.066 13.9)
-
Step 400
400
#D9858E
oklch(70.7% 0.104 13.1)
-
Step 500
500
#CD6472
oklch(63.2% 0.133 13.3)
-
Step 600
600
#B8485A
oklch(55.6% 0.145 13.4)
-
Step 700
700
#9E394A
oklch(49.2% 0.134 13.5)
-
Step 800
800
#80303D
oklch(42.7% 0.111 13.3)
-
Step 900
900 (this color)
#642831
oklch(36.5% 0.087 13.2)
-
Step 950
950
#3D1A1F
oklch(27% 0.055 12.5)
#642831 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) | #353431 | 0.095 |
| Deuteranopia (no green cones) | #444030 | 0.088 |
| Tritanopia (no blue cones) | #6D202B | 0.022 |
| Achromatopsia (no color) | #3C3C3C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642831
#642831
oklch(36.5% 0.087 13.2)
- #004948
#004948
oklch(36.7% 0.063 193.2)
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 #642831, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.046
- Reddy Brown #6E1005 ΔE 0.056
- Claret #680018 ΔE 0.059
- Wine Red #7B0323 ΔE 0.060
- Chestnut #742802 ΔE 0.061
- Bordeaux #7B002C ΔE 0.062
- Merlot #730039 ΔE 0.064
- Burgundy #610023 ΔE 0.064
Use #642831 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.