#63573A
Closest named color: Olive Brown (#645403). oklch(46.1% 0.046 88), rgb(99, 87, 58).
Aa
White text reads best on this color (7.10:1).
About this color
#63573A is a medium-dark, muted brown. In OKLCH its lightness is 46%, its chroma 0.046 and its hue 88°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.047 away. White text reads best on it, at 7.10:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.046) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #63573A |
| RGB | rgb(99, 87, 58) |
| HSL | hsl(42, 26%, 31%) |
| OKLCH | oklch(46.1% 0.046 88) |
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 #63573A | 7.10:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #63573A | 2.95:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #63573A text on white | 7.10:1 | AAA | Lc 84.6 | Fine for body text |
| #63573A text on black | 2.95:1 | Fails | Lc -17.4 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EBEAE5
oklch(93.6% 0.007 97.4)
-
Step 200
200
#DCD9D0
oklch(88.5% 0.013 91.5)
-
Step 300
300
#C6C0B1
oklch(80.9% 0.022 88.7)
-
Step 400
400
#AAA088
oklch(70.8% 0.036 88.1)
-
Step 500
500
#95886A
oklch(63% 0.045 87.3)
-
Step 600
600
#7F7252
oklch(55.6% 0.049 88.4)
-
Step 700
700 (this color)
#63573A
oklch(46.1% 0.046 88)
-
Step 800
800
#584E37
oklch(42.7% 0.038 87.2)
-
Step 900
900
#48412F
oklch(37.7% 0.03 89.3)
-
Step 950
950
#2A261C
oklch(27% 0.019 88.8)
#63573A 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) | #5D5638 | 0.011 |
| Deuteranopia (no green cones) | #60593B | 0.007 |
| Tritanopia (no blue cones) | #695250 | 0.043 |
| Achromatopsia (no color) | #585858 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63573A
#63573A
oklch(46.1% 0.046 88)
- #4D5873
#4D5873
oklch(46.2% 0.046 267.4)
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 #63573A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.047
- Mud #735C12 ΔE 0.052
- Milk Chocolate #7F4E1E ΔE 0.054
- Medium Brown #7F5112 ΔE 0.057
- Mud Brown #60460F ΔE 0.058
- Greeny Brown #696006 ΔE 0.060
- Green Brown #544E03 ΔE 0.062
- Camo Green #526525 ΔE 0.063
Use #63573A 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.