#633221
Closest named color: Chestnut (#742802). oklch(37.7% 0.076 39.7), rgb(99, 50, 33).
Aa
White text reads best on this color (10.45:1).
About this color
#633221 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.076 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.041 away. White text reads best on it, at 10.45:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #633221 |
| RGB | rgb(99, 50, 33) |
| HSL | hsl(15, 50%, 26%) |
| OKLCH | oklch(37.7% 0.076 39.7) |
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 #633221 | 10.45:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #633221 | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #633221 text on white | 10.45:1 | AAA | Lc 93.9 | Preferred for body text |
| #633221 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F4E6E2
oklch(93.5% 0.016 36.5)
-
Step 200
200
#EDD3CA
oklch(88.6% 0.032 40.1)
-
Step 300
300
#E2B5A5
oklch(80.9% 0.057 40.5)
-
Step 400
400
#D28D75
oklch(70.7% 0.091 40)
-
Step 500
500
#C46F52
oklch(63.1% 0.116 39.5)
-
Step 600
600
#B05536
oklch(55.6% 0.127 39.2)
-
Step 700
700
#974528
oklch(49.1% 0.118 39.5)
-
Step 800
800
#7A3922
oklch(42.6% 0.097 39.7)
-
Step 900
900 (this color)
#633221
oklch(37.7% 0.076 39.7)
-
Step 950
950
#3A1E14
oklch(27.1% 0.047 40.3)
#633221 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 | 0.072 |
| Deuteranopia (no green cones) | #4B4420 | 0.067 |
| Tritanopia (no blue cones) | #6D292E | 0.038 |
| Achromatopsia (no color) | #3F3F3F | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633221
#633221
oklch(37.7% 0.076 39.7)
- #004A5A
#004A5A
oklch(37.8% 0.068 218.5)
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 #633221, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.041
- Purple Brown #673A3F ΔE 0.044
- Reddy Brown #6E1005 ΔE 0.062
- Mud Brown #60460F ΔE 0.065
- Blood #770001 ΔE 0.076
- Maroon #800000 ΔE 0.081
- Brownish Purple #76424E ΔE 0.081
- Red Brown #8B2E16 ΔE 0.082
Use #633221 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.