#573E39
Closest named color: Purple Brown (#673A3F). oklch(39% 0.036 31.5), rgb(87, 62, 57).
Aa
White text reads best on this color (9.75:1).
About this color
#573E39 is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.036 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.035 away. White text reads best on it, at 9.75:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.15:1 |
| White text | 9.75:1 |
Values
| HEX | #573E39 |
| RGB | rgb(87, 62, 57) |
| HSL | hsl(10, 21%, 28%) |
| OKLCH | oklch(39% 0.036 31.5) |
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 #573E39 | 9.75:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #573E39 | 2.15:1 | Fails | Lc 11.4 | Not readable |
| #573E39 text on white | 9.75:1 | AAA | Lc 92.6 | Preferred for body text |
| #573E39 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
#F8F5F4
oklch(97.2% 0.003 39.5)
-
Step 100
100
#EFE8E7
oklch(93.6% 0.008 27.2)
-
Step 200
200
#E3D6D3
oklch(88.6% 0.015 33.1)
-
Step 300
300
#D2BBB6
oklch(81% 0.027 32.3)
-
Step 400
400
#BA9790
oklch(70.6% 0.043 31.3)
-
Step 500
500
#A97D75
oklch(63.1% 0.057 30.4)
-
Step 600
600
#94665D
oklch(55.6% 0.062 31.4)
-
Step 700
700
#7E554D
oklch(49.2% 0.057 31.4)
-
Step 800
800
#66463F
oklch(42.8% 0.046 32.7)
-
Step 900
900 (this color)
#573E39
oklch(39% 0.036 31.5)
-
Step 950
950
#31221F
oklch(26.9% 0.024 31.5)
#573E39 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) | #434139 | 0.036 |
| Deuteranopia (no green cones) | #494639 | 0.034 |
| Tritanopia (no blue cones) | #5D3B3D | 0.017 |
| Achromatopsia (no color) | #444444 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573E39
#573E39
oklch(39% 0.036 31.5)
- #2D4A50
#2D4A50
oklch(38.9% 0.036 212.1)
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 #573E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.035
- Charcoal Grey #3C4142 ΔE 0.047
- Mud Brown #60460F ΔE 0.064
- Onyx #343A40 ΔE 0.066
- Brownish Purple #76424E ΔE 0.070
- Dark Slate Gray #2F4F4F ΔE 0.075
- Chestnut #742802 ΔE 0.080
- Charcoal #264653 ΔE 0.081
Use #573E39 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.