#633C28
Closest named color: Purple Brown (#673A3F). oklch(39.8% 0.064 47.5), rgb(99, 60, 40).
Aa
White text reads best on this color (9.51:1).
About this color
#633C28 is a dark, muted brown. In OKLCH its lightness is 40%, its chroma 0.064 and its hue 47°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.038 away. White text reads best on it, at 9.51:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.20:1 |
| White text | 9.51:1 |
Values
| HEX | #633C28 |
| RGB | rgb(99, 60, 40) |
| HSL | hsl(20, 42%, 27%) |
| OKLCH | oklch(39.8% 0.064 47.5) |
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 #633C28 | 9.51:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #633C28 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #633C28 text on white | 9.51:1 | AAA | Lc 91.8 | Preferred for body text |
| #633C28 text on black | 2.20:1 | Fails | Lc -10.6 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F2E7E2
oklch(93.5% 0.014 46.2)
-
Step 200
200
#E9D4CB
oklch(88.5% 0.027 44.7)
-
Step 300
300
#DCB8A7
oklch(81% 0.048 46.7)
-
Step 400
400
#C99277
oklch(70.7% 0.077 47.2)
-
Step 500
500
#BA7754
oklch(63.2% 0.098 48)
-
Step 600
600
#A55E39
oklch(55.6% 0.106 47.1)
-
Step 700
700
#8D4D2B
oklch(49% 0.099 47.2)
-
Step 800
800
#734025
oklch(42.8% 0.082 47.5)
-
Step 900
900 (this color)
#633C28
oklch(39.8% 0.064 47.5)
-
Step 950
950
#372015
oklch(27% 0.041 46.1)
#633C28 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) | #474026 | 0.054 |
| Deuteranopia (no green cones) | #504928 | 0.050 |
| Tritanopia (no blue cones) | #6C3537 | 0.038 |
| Achromatopsia (no color) | #464646 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633C28
#633C28
oklch(39.8% 0.064 47.5)
- #1A4E62
#1A4E62
oklch(39.9% 0.064 227.3)
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 #633C28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.038
- Mud Brown #60460F ΔE 0.045
- Chestnut #742802 ΔE 0.054
- Brownish Purple #76424E ΔE 0.069
- Charcoal Grey #3C4142 ΔE 0.075
- Green Brown #544E03 ΔE 0.077
- Milk Chocolate #7F4E1E ΔE 0.080
- Red Brown #8B2E16 ΔE 0.081
Use #633C28 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.