#634839
Closest named color: Purple Brown (#673A3F). oklch(42.7% 0.044 50.2), rgb(99, 72, 57).
Aa
White text reads best on this color (8.34:1).
About this color
#634839 is a dark, muted brown. In OKLCH its lightness is 43%, its chroma 0.044 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.045 away. White text reads best on it, at 8.34:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | muted (0.044) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.51:1 |
| White text | 8.34:1 |
Values
| HEX | #634839 |
| RGB | rgb(99, 72, 57) |
| HSL | hsl(21, 27%, 31%) |
| OKLCH | oklch(42.7% 0.044 50.2) |
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 #634839 | 8.34:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #634839 | 2.51:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #634839 text on white | 8.34:1 | AAA | Lc 88.7 | Fine for body text |
| #634839 text on black | 2.51:1 | Fails | Lc -13.5 | 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
#F7F5F3
oklch(97.1% 0.003 67.8)
-
Step 100
100
#EEE8E5
oklch(93.5% 0.008 48.7)
-
Step 200
200
#E1D7D1
oklch(88.5% 0.014 53.3)
-
Step 300
300
#CFBCB2
oklch(80.8% 0.026 49.7)
-
Step 400
400
#B79A8A
oklch(70.8% 0.042 50.6)
-
Step 500
500
#A4816D
oklch(63.1% 0.052 51.2)
-
Step 600
600
#8F6A55
oklch(55.6% 0.057 50.8)
-
Step 700
700
#7A5845
oklch(49.1% 0.054 50.3)
-
Step 800
800 (this color)
#634839
oklch(42.7% 0.044 50.2)
-
Step 900
900
#513C31
oklch(37.6% 0.035 48.9)
-
Step 950
950
#2F231D
oklch(26.8% 0.021 47.9)
#634839 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) | #4F4A38 | 0.036 |
| Deuteranopia (no green cones) | #565039 | 0.032 |
| Tritanopia (no blue cones) | #6A4344 | 0.029 |
| Achromatopsia (no color) | #4E4E4E | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634839
#634839
oklch(42.7% 0.044 50.2)
- #355463
#355463
oklch(42.8% 0.044 230)
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 #634839, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.045
- Mud Brown #60460F ΔE 0.048
- Brownish Purple #76424E ΔE 0.055
- Milk Chocolate #7F4E1E ΔE 0.065
- Green Brown #544E03 ΔE 0.071
- Olive Brown #645403 ΔE 0.071
- Medium Brown #7F5112 ΔE 0.074
- Charcoal Grey #3C4142 ΔE 0.075
Use #634839 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.