#63531D
Closest named color: Olive Brown (#645403). oklch(44.7% 0.075 92.5), rgb(99, 83, 29).
Aa
White text reads best on this color (7.53:1).
About this color
#63531D is a dark, moderately saturated brown. In OKLCH its lightness is 45%, its chroma 0.075 and its hue 92°. 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 7.53:1.
| Hue family | Browns |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.78:1 |
| White text | 7.53:1 |
Values
| HEX | #63531D |
| RGB | rgb(99, 83, 29) |
| HSL | hsl(46, 55%, 25%) |
| OKLCH | oklch(44.7% 0.075 92.5) |
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 #63531D | 7.53:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #63531D | 2.78:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #63531D text on white | 7.53:1 | AAA | Lc 86.1 | Fine for body text |
| #63531D text on black | 2.78:1 | Fails | Lc -15.9 | 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 800.
-
Step 50
50
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EDEAE1
oklch(93.7% 0.012 91.5)
-
Step 200
200
#DFD9C8
oklch(88.5% 0.024 90.8)
-
Step 300
300
#CAC0A1
oklch(80.8% 0.043 92.3)
-
Step 400
400
#B0A06E
oklch(70.8% 0.07 92.4)
-
Step 500
500
#9C8846
oklch(63.1% 0.089 92.8)
-
Step 600
600
#877125
oklch(55.5% 0.097 92.5)
-
Step 700
700
#735F17
oklch(49.2% 0.091 92.6)
-
Step 800
800 (this color)
#63531D
oklch(44.7% 0.075 92.5)
-
Step 900
900
#4C411A
oklch(37.8% 0.058 93.7)
-
Step 950
950
#2D2610
oklch(27.1% 0.037 92.1)
#63531D 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) | #5C5216 | 0.015 |
| Deuteranopia (no green cones) | #605620 | 0.009 |
| Tritanopia (no blue cones) | #6B4C48 | 0.069 |
| Achromatopsia (no color) | #545454 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63531D
#63531D
oklch(44.7% 0.075 92.5)
- #46517E
#46517E
oklch(44.6% 0.075 272.6)
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 #63531D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.017
- Green Brown #544E03 ΔE 0.036
- Mud Brown #60460F ΔE 0.038
- Mud #735C12 ΔE 0.042
- Greeny Brown #696006 ΔE 0.046
- Army Green #4B5D16 ΔE 0.050
- Medium Brown #7F5112 ΔE 0.050
- Milk Chocolate #7F4E1E ΔE 0.052
Use #63531D 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.