#573B2B
Closest named color: Purple Brown (#673A3F). oklch(38% 0.047 50.6), rgb(87, 59, 43).
Aa
White text reads best on this color (10.16:1).
About this color
#573B2B is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.047 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.046 away. White text reads best on it, at 10.16:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.047) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.06:1 |
| White text | 10.16:1 |
Values
| HEX | #573B2B |
| RGB | rgb(87, 59, 43) |
| HSL | hsl(22, 34%, 25%) |
| OKLCH | oklch(38% 0.047 50.6) |
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 #573B2B | 10.16:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #573B2B | 2.06:1 | Fails | Lc 10.4 | Not readable |
| #573B2B text on white | 10.16:1 | AAA | Lc 93.5 | Preferred for body text |
| #573B2B text on black | 2.06:1 | Fails | Lc -9.0 | 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 900.
-
Step 50
50
#F8F5F3
oklch(97.2% 0.004 56.4)
-
Step 100
100
#F0E8E4
oklch(93.6% 0.01 48.6)
-
Step 200
200
#E5D6CE
oklch(88.6% 0.02 50.1)
-
Step 300
300
#D4BBAC
oklch(80.9% 0.035 53)
-
Step 400
400
#BE9781
oklch(70.7% 0.056 50.9)
-
Step 500
500
#AE7D61
oklch(63.2% 0.073 50.7)
-
Step 600
600
#996548
oklch(55.6% 0.08 49.7)
-
Step 700
700
#825439
oklch(49.1% 0.073 50.8)
-
Step 800
800
#6A4530
oklch(42.7% 0.061 50.1)
-
Step 900
900 (this color)
#573B2B
oklch(38% 0.047 50.6)
-
Step 950
950
#332219
oklch(27% 0.031 48.9)
#573B2B 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) | #433E2A | 0.038 |
| Deuteranopia (no green cones) | #49442B | 0.036 |
| Tritanopia (no blue cones) | #5E3637 | 0.031 |
| Achromatopsia (no color) | #414141 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573B2B
#573B2B
oklch(38% 0.047 50.6)
- #264757
#264757
oklch(38% 0.047 230.8)
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 #573B2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.046
- Mud Brown #60460F ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.055
- Chestnut #742802 ΔE 0.069
- Onyx #343A40 ΔE 0.070
- Green Brown #544E03 ΔE 0.079
- Dark Olive #373E02 ΔE 0.081
- Brownish Purple #76424E ΔE 0.084
Use #573B2B 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.