#573F18
Closest named color: Mud Brown (#60460F). oklch(38.6% 0.064 76.9), rgb(87, 63, 24).
Aa
White text reads best on this color (9.86:1).
About this color
#573F18 is a dark, muted brown. In OKLCH its lightness is 39%, its chroma 0.064 and its hue 77°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.030 away. White text reads best on it, at 9.86:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #573F18 |
| RGB | rgb(87, 63, 24) |
| HSL | hsl(37, 57%, 22%) |
| OKLCH | oklch(38.6% 0.064 76.9) |
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 #573F18 | 9.86:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #573F18 | 2.12:1 | Fails | Lc 11.2 | Not readable |
| #573F18 text on white | 9.86:1 | AAA | Lc 92.8 | Preferred for body text |
| #573F18 text on black | 2.12:1 | Fails | Lc -9.7 | 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
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#EFE9E0
oklch(93.6% 0.014 78.3)
-
Step 200
200
#E3D7C6
oklch(88.4% 0.026 76.8)
-
Step 300
300
#D2BD9F
oklch(80.8% 0.047 76.7)
-
Step 400
400
#BC9B69
oklch(70.8% 0.077 77.4)
-
Step 500
500
#AB813F
oklch(63.1% 0.098 76.6)
-
Step 600
600
#966A1B
oklch(55.6% 0.106 76.9)
-
Step 700
700
#80580A
oklch(49.1% 0.099 76.8)
-
Step 800
800
#68480F
oklch(42.7% 0.082 76.6)
-
Step 900
900 (this color)
#573F18
oklch(38.6% 0.064 76.9)
-
Step 950
950
#32240E
oklch(27.1% 0.041 76.9)
#573F18 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) | #484014 | 0.029 |
| Deuteranopia (no green cones) | #4E4619 | 0.026 |
| Tritanopia (no blue cones) | #5F3837 | 0.056 |
| Achromatopsia (no color) | #434343 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F18
#573F18
oklch(38.6% 0.064 76.9)
- #2D4566
#2D4566
oklch(38.7% 0.064 256.6)
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 #573F18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.030
- Green Brown #544E03 ΔE 0.052
- Dark Olive #373E02 ΔE 0.064
- Purple Brown #673A3F ΔE 0.070
- Charcoal Grey #3C4142 ΔE 0.070
- Olive Brown #645403 ΔE 0.073
- Chestnut #742802 ΔE 0.073
- Navy Green #35530A ΔE 0.084
Use #573F18 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.