#573F30
Closest named color: Purple Brown (#673A3F). oklch(39% 0.042 53.1), rgb(87, 63, 48).
Aa
White text reads best on this color (9.72:1).
About this color
#573F30 is a dark, muted brown. In OKLCH its lightness is 39%, its chroma 0.042 and its hue 53°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.044 away. White text reads best on it, at 9.72:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | muted (0.042) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.15:1 |
| White text | 9.72:1 |
Values
| HEX | #573F30 |
| RGB | rgb(87, 63, 48) |
| HSL | hsl(23, 29%, 26%) |
| OKLCH | oklch(39% 0.042 53.1) |
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 #573F30 | 9.72:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #573F30 | 2.15:1 | Fails | Lc 11.5 | Not readable |
| #573F30 text on white | 9.72:1 | AAA | Lc 92.5 | Preferred for body text |
| #573F30 text on black | 2.15:1 | Fails | Lc -9.9 | 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
#EFE8E4
oklch(93.5% 0.009 52.1)
-
Step 200
200
#E3D6CF
oklch(88.5% 0.017 50.4)
-
Step 300
300
#D2BCAE
oklch(81% 0.032 54.6)
-
Step 400
400
#BA9984
oklch(70.7% 0.049 54.2)
-
Step 500
500
#A97F65
oklch(63.1% 0.064 53)
-
Step 600
600
#94684C
oklch(55.6% 0.07 53.3)
-
Step 700
700
#7E563D
oklch(49% 0.065 52.6)
-
Step 800
800
#664733
oklch(42.7% 0.053 53.6)
-
Step 900
900 (this color)
#573F30
oklch(39% 0.042 53.1)
-
Step 950
950
#31231A
oklch(27% 0.027 54)
#573F30 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) | #46412F | 0.031 |
| Deuteranopia (no green cones) | #4B4630 | 0.029 |
| Tritanopia (no blue cones) | #5D3B3B | 0.027 |
| Achromatopsia (no color) | #444444 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F30
#573F30
oklch(39% 0.042 53.1)
- #2E4958
#2E4958
oklch(39% 0.041 233.6)
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 #573F30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.044
- Mud Brown #60460F ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.052
- Onyx #343A40 ΔE 0.071
- Green Brown #544E03 ΔE 0.074
- Chestnut #742802 ΔE 0.075
- Dark Slate Gray #2F4F4F ΔE 0.076
- Brownish Purple #76424E ΔE 0.078
Use #573F30 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.