#643632
Closest named color: Purple Brown (#673A3F). oklch(39% 0.067 25.8), rgb(100, 54, 50).
Aa
White text reads best on this color (9.92:1).
About this color
#643632 is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.067 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.021 away. White text reads best on it, at 9.92:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.067) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #643632 |
| RGB | rgb(100, 54, 50) |
| HSL | hsl(5, 33%, 29%) |
| OKLCH | oklch(39% 0.067 25.8) |
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 #643632 | 9.92:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #643632 | 2.11:1 | Fails | Lc 11.1 | Not readable |
| #643632 text on white | 9.92:1 | AAA | Lc 92.8 | Preferred for body text |
| #643632 text on black | 2.11:1 | Fails | Lc -9.7 | 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
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F3E6E5
oklch(93.5% 0.014 22.8)
-
Step 200
200
#EBD3D0
oklch(88.6% 0.027 26.2)
-
Step 300
300
#DFB5B0
oklch(80.9% 0.049 26.1)
-
Step 400
400
#CE8D87
oklch(70.7% 0.08 25.1)
-
Step 500
500
#C07069
oklch(63.2% 0.103 25.7)
-
Step 600
600
#AB5750
oklch(55.6% 0.111 26.2)
-
Step 700
700
#924741
oklch(49.1% 0.102 26.2)
-
Step 800
800
#773A36
oklch(42.6% 0.086 25.2)
-
Step 900
900 (this color)
#643632
oklch(39% 0.067 25.8)
-
Step 950
950
#391E1C
oklch(27.1% 0.043 24.8)
#643632 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) | #403D31 | 0.070 |
| Deuteranopia (no green cones) | #4B4631 | 0.064 |
| Tritanopia (no blue cones) | #6D3035 | 0.024 |
| Achromatopsia (no color) | #434343 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643632
#643632
oklch(39% 0.067 25.8)
- #004F56
#004F56
oklch(39% 0.067 205.1)
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 #643632, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.021
- Chestnut #742802 ΔE 0.055
- Brownish Purple #76424E ΔE 0.061
- Mud Brown #60460F ΔE 0.071
- Reddy Brown #6E1005 ΔE 0.075
- Charcoal Grey #3C4142 ΔE 0.076
- Red Brown #8B2E16 ΔE 0.081
- Wine Red #7B0323 ΔE 0.083
Use #643632 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.