#573F33
Closest named color: Purple Brown (#673A3F). oklch(39.1% 0.039 47.7), rgb(87, 63, 51).
Aa
White text reads best on this color (9.70:1).
About this color
#573F33 is a dark, muted brown. In OKLCH its lightness is 39%, its chroma 0.039 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.041 away. White text reads best on it, at 9.70:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.16:1 |
| White text | 9.70:1 |
Values
| HEX | #573F33 |
| RGB | rgb(87, 63, 51) |
| HSL | hsl(20, 26%, 27%) |
| OKLCH | oklch(39.1% 0.039 47.7) |
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 #573F33 | 9.70:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #573F33 | 2.16:1 | Fails | Lc 11.5 | Not readable |
| #573F33 text on white | 9.70:1 | AAA | Lc 92.4 | Preferred for body text |
| #573F33 text on black | 2.16:1 | Fails | Lc -10.0 | 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
#EFE8E5
oklch(93.6% 0.009 44.9)
-
Step 200
200
#E3D6D0
oklch(88.5% 0.017 46.6)
-
Step 300
300
#D1BBB1
oklch(80.8% 0.029 46)
-
Step 400
400
#BA9888
oklch(70.6% 0.047 46.6)
-
Step 500
500
#A87F6A
oklch(63.1% 0.06 48.3)
-
Step 600
600
#936852
oklch(55.6% 0.065 48.1)
-
Step 700
700
#7D5642
oklch(49% 0.06 48)
-
Step 800
800
#664737
oklch(42.8% 0.05 48.3)
-
Step 900
900 (this color)
#573F33
oklch(39.1% 0.039 47.7)
-
Step 950
950
#31231C
oklch(27.1% 0.025 47.8)
#573F33 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) | #454132 | 0.033 |
| Deuteranopia (no green cones) | #4B4633 | 0.029 |
| Tritanopia (no blue cones) | #5D3B3C | 0.024 |
| Achromatopsia (no color) | #444444 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F33
#573F33
oklch(39.1% 0.039 47.7)
- #2E4A56
#2E4A56
oklch(39.2% 0.039 226.9)
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 #573F33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.050
- Mud Brown #60460F ΔE 0.054
- Onyx #343A40 ΔE 0.069
- Dark Slate Gray #2F4F4F ΔE 0.075
- Brownish Purple #76424E ΔE 0.075
- Chestnut #742802 ΔE 0.077
- Green Brown #544E03 ΔE 0.077
Use #573F33 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.