#573339
Closest named color: Purple Brown (#673A3F). oklch(36.7% 0.053 9.2), rgb(87, 51, 57).
Aa
White text reads best on this color (10.83:1).
About this color
#573339 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.053 and its hue 9°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.040 away. White text reads best on it, at 10.83:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.93:1 |
| White text | 10.83:1 |
Values
| HEX | #573339 |
| RGB | rgb(87, 51, 57) |
| HSL | hsl(350, 26%, 27%) |
| OKLCH | oklch(36.7% 0.053 9.2) |
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 #573339 | 10.83:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #573339 | 1.93:1 | Fails | Lc 8.9 | Not readable |
| #573339 text on white | 10.83:1 | AAA | Lc 95.0 | Preferred for body text |
| #573339 text on black | 1.93:1 | Fails | Lc -7.7 | 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
#F9F4F5
oklch(97.1% 0.006 3.3)
-
Step 100
100
#F1E7E8
oklch(93.6% 0.011 10.3)
-
Step 200
200
#E7D3D6
oklch(88.4% 0.023 7.2)
-
Step 300
300
#D9B7BB
oklch(81% 0.039 10)
-
Step 400
400
#C49198
oklch(70.7% 0.062 9.6)
-
Step 500
500
#B4757F
oklch(63.1% 0.08 9.2)
-
Step 600
600
#9F5D68
oklch(55.6% 0.087 9.5)
-
Step 700
700
#884C57
oklch(49.1% 0.082 8.8)
-
Step 800
800
#6F3F47
oklch(42.8% 0.068 9.6)
-
Step 900
900 (this color)
#573339
oklch(36.7% 0.053 9.2)
-
Step 950
950
#352023
oklch(27.1% 0.033 10.1)
#573339 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) | #393939 | 0.057 |
| Deuteranopia (no green cones) | #424038 | 0.054 |
| Tritanopia (no blue cones) | #5D3035 | 0.014 |
| Achromatopsia (no color) | #3D3D3D | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573339
#573339
oklch(36.7% 0.053 9.2)
- #164845
#164845
oklch(36.8% 0.053 189.5)
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 #573339, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.059
- Onyx #343A40 ΔE 0.064
- Chestnut #742802 ΔE 0.079
- Brownish Purple #76424E ΔE 0.081
- Reddy Brown #6E1005 ΔE 0.084
- Gunmetal #293241 ΔE 0.086
- Claret #680018 ΔE 0.089
Use #573339 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.