#573C09
Closest named color: Mud Brown (#60460F). oklch(37.8% 0.073 77.7), rgb(87, 60, 9).
Aa
White text reads best on this color (10.21:1).
About this color
#573C09 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.073 and its hue 78°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.035 away. White text reads best on it, at 10.21:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.05:1 |
| White text | 10.21:1 |
Values
| HEX | #573C09 |
| RGB | rgb(87, 60, 9) |
| HSL | hsl(39, 81%, 19%) |
| OKLCH | oklch(37.8% 0.073 77.7) |
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 #573C09 | 10.21:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #573C09 | 2.05:1 | Fails | Lc 10.4 | Not readable |
| #573C09 text on white | 10.21:1 | AAA | Lc 93.5 | Preferred for body text |
| #573C09 text on black | 2.05:1 | 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
#F8F5F0
oklch(97.1% 0.007 80.7)
-
Step 100
100
#F0E9DE
oklch(93.6% 0.017 79.3)
-
Step 200
200
#E5D7C3
oklch(88.5% 0.031 76.9)
-
Step 300
300
#D5BD99
oklch(81% 0.056 77.8)
-
Step 400
400
#BF9A60
oklch(70.7% 0.088 77.9)
-
Step 500
500
#AF802E
oklch(63.2% 0.112 77.7)
-
Step 600
600
#986900
oklch(55.6% 0.116 77.9)
-
Step 700
700
#805800
oklch(49.1% 0.102 78.1)
-
Step 800
800
#6A4800
oklch(42.9% 0.089 77.8)
-
Step 900
900 (this color)
#573C09
oklch(37.8% 0.073 77.7)
-
Step 950
950
#332309
oklch(27% 0.046 76.5)
#573C09 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) | #463D01 | 0.034 |
| Deuteranopia (no green cones) | #4D440B | 0.029 |
| Tritanopia (no blue cones) | #603533 | 0.063 |
| Achromatopsia (no color) | #414141 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573C09
#573C09
oklch(37.8% 0.073 77.7)
- #284268
#284268
oklch(37.7% 0.073 257.8)
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 #573C09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.035
- Green Brown #544E03 ΔE 0.055
- Dark Olive #373E02 ΔE 0.060
- Chestnut #742802 ΔE 0.071
- Olive Brown #645403 ΔE 0.078
- Charcoal Grey #3C4142 ΔE 0.078
- Purple Brown #673A3F ΔE 0.079
- Navy Green #35530A ΔE 0.086
Use #573C09 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.