#63591C
Closest named color: Olive Brown (#645403). oklch(46.1% 0.081 99.9), rgb(99, 89, 28).
Aa
White text reads best on this color (7.05:1).
About this color
#63591C is a medium-dark, moderately saturated brown. In OKLCH its lightness is 46%, its chroma 0.081 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.017 away. White text reads best on it, at 7.05:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #63591C |
| RGB | rgb(99, 89, 28) |
| HSL | hsl(52, 56%, 25%) |
| OKLCH | oklch(46.1% 0.081 99.9) |
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 #63591C | 7.05:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #63591C | 2.97:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #63591C text on white | 7.05:1 | AAA | Lc 84.4 | Fine for body text |
| #63591C text on black | 2.97:1 | Fails | Lc -17.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F6F2
oklch(97.2% 0.005 106.5)
-
Step 100
100
#EBEAE2
oklch(93.6% 0.011 100.8)
-
Step 200
200
#DCDACA
oklch(88.6% 0.022 101)
-
Step 300
300
#C6C2A5
oklch(81% 0.04 100.8)
-
Step 400
400
#A9A275
oklch(70.7% 0.062 100.3)
-
Step 500
500
#958B50
oklch(63.2% 0.08 99.9)
-
Step 600
600
#7F7433
oklch(55.5% 0.087 99.8)
-
Step 700
700 (this color)
#63591C
oklch(46.1% 0.081 99.9)
-
Step 800
800
#585021
oklch(42.8% 0.067 99.8)
-
Step 900
900
#484220
oklch(37.6% 0.052 99.5)
-
Step 950
950
#2A2713
oklch(27% 0.034 100.9)
#63591C 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) | #625614 | 0.010 |
| Deuteranopia (no green cones) | #655A1F | 0.005 |
| Tritanopia (no blue cones) | #6B524C | 0.074 |
| Achromatopsia (no color) | #595959 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63591C
#63591C
oklch(46.1% 0.081 99.9)
- #4F5385
#4F5385
oklch(46.1% 0.081 279.2)
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 #63591C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.017
- Greeny Brown #696006 ΔE 0.029
- Mud #735C12 ΔE 0.030
- Camo Green #526525 ΔE 0.041
- Army Green #4B5D16 ΔE 0.041
- Green Brown #544E03 ΔE 0.045
- Mud Green #606602 ΔE 0.045
- Camouflage Green #4B6113 ΔE 0.046
Use #63591C 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.