#634636
Closest named color: Purple Brown (#673A3F). oklch(42.2% 0.047 49.9), rgb(99, 70, 54).
Aa
White text reads best on this color (8.53:1).
About this color
#634636 is a dark, muted brown. In OKLCH its lightness is 42%, its chroma 0.047 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.042 away. White text reads best on it, at 8.53:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | muted (0.047) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.45:1 |
| White text | 8.53:1 |
Values
| HEX | #634636 |
| RGB | rgb(99, 70, 54) |
| HSL | hsl(21, 29%, 30%) |
| OKLCH | oklch(42.2% 0.047 49.9) |
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 #634636 | 8.53:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #634636 | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #634636 text on white | 8.53:1 | AAA | Lc 89.3 | Fine for body text |
| #634636 text on black | 2.45:1 | Fails | Lc -12.9 | 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
#E2D6D0
oklch(88.4% 0.016 48.5)
-
Step 300
300
#D0BCB1
oklch(80.9% 0.028 50.8)
-
Step 400
400
#B89988
oklch(70.6% 0.044 50.4)
-
Step 500
500
#A6806B
oklch(63.1% 0.056 50.3)
-
Step 600
600
#916953
oklch(55.6% 0.061 49.9)
-
Step 700
700
#7C5743
oklch(49.1% 0.058 49.3)
-
Step 800
800 (this color)
#634636
oklch(42.2% 0.047 49.9)
-
Step 900
900
#523C30
oklch(37.7% 0.037 49.8)
-
Step 950
950
#30231C
oklch(26.9% 0.024 49.6)
#634636 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) | #4E4935 | 0.038 |
| Deuteranopia (no green cones) | #554F36 | 0.035 |
| Tritanopia (no blue cones) | #6A4142 | 0.030 |
| Achromatopsia (no color) | #4C4C4C | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634636
#634636
oklch(42.2% 0.047 49.9)
- #315363
#315363
oklch(42.3% 0.048 229.6)
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 #634636, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.042
- Mud Brown #60460F ΔE 0.045
- Brownish Purple #76424E ΔE 0.057
- Milk Chocolate #7F4E1E ΔE 0.067
- Green Brown #544E03 ΔE 0.071
- Olive Brown #645403 ΔE 0.073
- Charcoal Grey #3C4142 ΔE 0.074
- Medium Brown #7F5112 ΔE 0.076
Use #634636 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.