#643221
Closest named color: Chestnut (#742802). oklch(37.9% 0.077 39.3), rgb(100, 50, 33).
Aa
White text reads best on this color (10.39:1).
About this color
#643221 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.077 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.039 away. White text reads best on it, at 10.39:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.02:1 |
| White text | 10.39:1 |
Values
| HEX | #643221 |
| RGB | rgb(100, 50, 33) |
| HSL | hsl(15, 50%, 26%) |
| OKLCH | oklch(37.9% 0.077 39.3) |
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 #643221 | 10.39:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #643221 | 2.02:1 | Fails | Lc 10.1 | Not readable |
| #643221 text on white | 10.39:1 | AAA | Lc 93.8 | Preferred for body text |
| #643221 text on black | 2.02:1 | Fails | Lc -8.7 | 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F5E6E2
oklch(93.6% 0.017 35.3)
-
Step 200
200
#EDD3CA
oklch(88.6% 0.032 40.1)
-
Step 300
300
#E3B5A5
oklch(81% 0.058 40.1)
-
Step 400
400
#D38D75
oklch(70.8% 0.093 39.7)
-
Step 500
500
#C56E51
oklch(63% 0.118 39.1)
-
Step 600
600
#B15535
oklch(55.7% 0.129 39.4)
-
Step 700
700
#984427
oklch(49.1% 0.121 39.1)
-
Step 800
800
#7B3922
oklch(42.7% 0.099 39.5)
-
Step 900
900 (this color)
#643221
oklch(37.9% 0.077 39.3)
-
Step 950
950
#3A1D14
oklch(26.8% 0.049 38)
#643221 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) | #3F391F | 0.074 |
| Deuteranopia (no green cones) | #4B4420 | 0.068 |
| Tritanopia (no blue cones) | #6E292E | 0.038 |
| Achromatopsia (no color) | #404040 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643221
#643221
oklch(37.9% 0.077 39.3)
- #004A5B
#004A5B
oklch(37.8% 0.069 219.8)
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 #643221, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.039
- Purple Brown #673A3F ΔE 0.043
- Reddy Brown #6E1005 ΔE 0.062
- Mud Brown #60460F ΔE 0.065
- Blood #770001 ΔE 0.075
- Red Brown #8B2E16 ΔE 0.079
- Maroon #800000 ΔE 0.080
- Brownish Purple #76424E ΔE 0.080
Use #643221 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.