#573340
Closest named color: Purple Brown (#673A3F). oklch(37% 0.055 356.9), rgb(87, 51, 64).
Aa
White text reads best on this color (10.75:1).
About this color
#573340 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.055 and its hue 357°. 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 10.75:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #573340 |
| RGB | rgb(87, 51, 64) |
| HSL | hsl(338, 26%, 27%) |
| OKLCH | oklch(37% 0.055 356.9) |
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 #573340 | 10.75:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #573340 | 1.95:1 | Fails | Lc 9.1 | Not readable |
| #573340 text on white | 10.75:1 | AAA | Lc 94.8 | Preferred for body text |
| #573340 text on black | 1.95:1 | Fails | Lc -7.8 | 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
#F1E7EA
oklch(93.7% 0.012 357)
-
Step 200
200
#E7D3D9
oklch(88.5% 0.024 357.4)
-
Step 300
300
#D8B6C1
oklch(80.9% 0.042 356.6)
-
Step 400
400
#C390A1
oklch(70.7% 0.065 357.1)
-
Step 500
500
#B3748A
oklch(63.2% 0.084 357.2)
-
Step 600
600
#9E5C74
oklch(55.7% 0.091 357.2)
-
Step 700
700
#874B61
oklch(49.1% 0.085 357.3)
-
Step 800
800
#6E3E4F
oklch(42.8% 0.071 357.8)
-
Step 900
900 (this color)
#573340
oklch(37% 0.055 356.9)
-
Step 950
950
#341F27
oklch(26.9% 0.035 355.2)
#573340 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) | #373A40 | 0.061 |
| Deuteranopia (no green cones) | #40403F | 0.056 |
| Tritanopia (no blue cones) | #5C3138 | 0.016 |
| Achromatopsia (no color) | #3E3E3E | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573340
#573340
oklch(37% 0.055 356.9)
- #19493F
#19493F
oklch(36.9% 0.055 177)
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 #573340, 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 0.061
- Onyx #343A40 ΔE 0.065
- Brownish Purple #76424E ΔE 0.079
- Grape Purple #5D1451 ΔE 0.083
- Gunmetal #293241 ΔE 0.085
- Chestnut #742802 ΔE 0.087
- Space Cadet #2B2D42 ΔE 0.088
Use #573340 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.