#634433
Closest named color: Purple Brown (#673A3F). oklch(41.7% 0.051 49.6), rgb(99, 68, 51).
Aa
White text reads best on this color (8.73:1).
About this color
#634433 is a dark, muted brown. In OKLCH its lightness is 42%, its chroma 0.051 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.040 away. White text reads best on it, at 8.73:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #634433 |
| RGB | rgb(99, 68, 51) |
| HSL | hsl(21, 32%, 29%) |
| OKLCH | oklch(41.7% 0.051 49.6) |
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 #634433 | 8.73:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #634433 | 2.40:1 | Fails | Lc 14.1 | Not readable |
| #634433 text on white | 8.73:1 | AAA | Lc 89.8 | Fine for body text |
| #634433 text on black | 2.40:1 | Fails | Lc -12.4 | 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 800.
-
Step 50
50
#F8F5F3
oklch(97.2% 0.004 56.4)
-
Step 100
100
#EFE8E5
oklch(93.6% 0.009 44.9)
-
Step 200
200
#E3D6D0
oklch(88.5% 0.017 46.6)
-
Step 300
300
#D1BCB0
oklch(81% 0.029 51.8)
-
Step 400
400
#BA9887
oklch(70.6% 0.048 48)
-
Step 500
500
#A87F69
oklch(63.1% 0.06 49.4)
-
Step 600
600
#936850
oklch(55.6% 0.066 50.1)
-
Step 700
700
#7D5641
oklch(49% 0.061 49.1)
-
Step 800
800 (this color)
#634433
oklch(41.7% 0.051 49.6)
-
Step 900
900
#533B2F
oklch(37.6% 0.04 47.6)
-
Step 950
950
#31231B
oklch(27% 0.026 51)
#634433 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) | #4C4732 | 0.042 |
| Deuteranopia (no green cones) | #544E33 | 0.039 |
| Tritanopia (no blue cones) | #6B3E40 | 0.034 |
| Achromatopsia (no color) | #4B4B4B | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634433
#634433
oklch(41.7% 0.051 49.6)
- #2D5263
#2D5263
oklch(41.8% 0.051 229.4)
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 #634433, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.040
- Mud Brown #60460F ΔE 0.043
- Brownish Purple #76424E ΔE 0.058
- Milk Chocolate #7F4E1E ΔE 0.069
- Green Brown #544E03 ΔE 0.071
- Chestnut #742802 ΔE 0.072
- Charcoal Grey #3C4142 ΔE 0.073
- Olive Brown #645403 ΔE 0.074
Use #634433 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.