#573D33
Closest named color: Purple Brown (#673A3F). oklch(38.6% 0.04 41.9), rgb(87, 61, 51).
Aa
White text reads best on this color (9.90:1).
About this color
#573D33 is a dark, muted brown. In OKLCH its lightness is 39%, its chroma 0.040 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.039 away. White text reads best on it, at 9.90:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | muted (0.040) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.12:1 |
| White text | 9.90:1 |
Values
| HEX | #573D33 |
| RGB | rgb(87, 61, 51) |
| HSL | hsl(17, 26%, 27%) |
| OKLCH | oklch(38.6% 0.04 41.9) |
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 #573D33 | 9.90:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #573D33 | 2.12:1 | Fails | Lc 11.0 | Not readable |
| #573D33 text on white | 9.90:1 | AAA | Lc 92.9 | Preferred for body text |
| #573D33 text on black | 2.12:1 | Fails | Lc -9.5 | 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
#EFE8E5
oklch(93.6% 0.009 44.9)
-
Step 200
200
#E4D6D1
oklch(88.6% 0.017 40.8)
-
Step 300
300
#D3BBB2
oklch(81% 0.03 41.7)
-
Step 400
400
#BC9789
oklch(70.7% 0.049 41.7)
-
Step 500
500
#AB7D6C
oklch(63.1% 0.063 41.2)
-
Step 600
600
#956654
oklch(55.5% 0.067 41.8)
-
Step 700
700
#7F5544
oklch(49.1% 0.062 42.9)
-
Step 800
800
#684538
oklch(42.6% 0.053 41.2)
-
Step 900
900 (this color)
#573D33
oklch(38.6% 0.04 41.9)
-
Step 950
950
#31221D
oklch(26.9% 0.025 39.2)
#573D33 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) | #434032 | 0.037 |
| Deuteranopia (no green cones) | #4A4533 | 0.033 |
| Tritanopia (no blue cones) | #5D393A | 0.022 |
| Achromatopsia (no color) | #434343 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573D33
#573D33
oklch(38.6% 0.04 41.9)
- #2A4954
#2A4954
oklch(38.6% 0.041 222.7)
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 #573D33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.050
- Mud Brown #60460F ΔE 0.059
- Onyx #343A40 ΔE 0.067
- Chestnut #742802 ΔE 0.075
- Brownish Purple #76424E ΔE 0.076
- Dark Slate Gray #2F4F4F ΔE 0.078
- Green Brown #544E03 ΔE 0.083
Use #573D33 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.