#573F39
Closest named color: Purple Brown (#673A3F). oklch(39.2% 0.035 34.5), rgb(87, 63, 57).
Aa
White text reads best on this color (9.65:1).
About this color
#573F39 is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.035 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.036 away. White text reads best on it, at 9.65:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #573F39 |
| RGB | rgb(87, 63, 57) |
| HSL | hsl(12, 21%, 28%) |
| OKLCH | oklch(39.2% 0.035 34.5) |
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 #573F39 | 9.65:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #573F39 | 2.17:1 | Fails | Lc 11.6 | Not readable |
| #573F39 text on white | 9.65:1 | AAA | Lc 92.3 | Preferred for body text |
| #573F39 text on black | 2.17:1 | Fails | Lc -10.1 | 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
#F8F5F4
oklch(97.2% 0.003 39.5)
-
Step 100
100
#EFE8E6
oklch(93.6% 0.008 36.6)
-
Step 200
200
#E3D6D3
oklch(88.6% 0.015 33.1)
-
Step 300
300
#D1BBB5
oklch(80.9% 0.027 35.7)
-
Step 400
400
#B9988F
oklch(70.7% 0.042 35.7)
-
Step 500
500
#A87E74
oklch(63.1% 0.055 33.8)
-
Step 600
600
#92675C
oklch(55.5% 0.058 34.9)
-
Step 700
700
#7D564C
oklch(49.2% 0.055 34.9)
-
Step 800
800
#65463E
oklch(42.6% 0.045 35)
-
Step 900
900 (this color)
#573F39
oklch(39.2% 0.035 34.5)
-
Step 950
950
#30231F
oklch(27% 0.021 37.8)
#573F39 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) | #444239 | 0.034 |
| Deuteranopia (no green cones) | #4A4639 | 0.030 |
| Tritanopia (no blue cones) | #5D3C3D | 0.017 |
| Achromatopsia (no color) | #454545 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F39
#573F39
oklch(39.2% 0.035 34.5)
- #2F4B51
#2F4B51
oklch(39.3% 0.035 212.6)
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 #573F39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.047
- Mud Brown #60460F ΔE 0.062
- Onyx #343A40 ΔE 0.067
- Brownish Purple #76424E ΔE 0.070
- Dark Slate Gray #2F4F4F ΔE 0.073
- Charcoal #264653 ΔE 0.081
- Chestnut #742802 ΔE 0.081
Use #573F39 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.