#573240
Closest named color: Purple Brown (#673A3F). oklch(36.8% 0.057 356.1), rgb(87, 50, 64).
Aa
White text reads best on this color (10.84:1).
About this color
#573240 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.057 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.042 away. White text reads best on it, at 10.84:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.057) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.93:1 |
| White text | 10.84:1 |
Values
| HEX | #573240 |
| RGB | rgb(87, 50, 64) |
| HSL | hsl(337, 27%, 27%) |
| OKLCH | oklch(36.8% 0.057 356.1) |
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 #573240 | 10.84:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #573240 | 1.93:1 | Fails | Lc 8.9 | Not readable |
| #573240 text on white | 10.84:1 | AAA | Lc 95.0 | Preferred for body text |
| #573240 text on black | 1.93:1 | Fails | Lc -7.6 | 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
#C48FA2
oklch(70.7% 0.069 355.7)
-
Step 500
500
#B4738B
oklch(63.1% 0.087 356.2)
-
Step 600
600
#9F5B75
oklch(55.7% 0.094 356.2)
-
Step 700
700
#884A62
oklch(49.1% 0.089 356.2)
-
Step 800
800
#6E3D50
oklch(42.6% 0.073 355.9)
-
Step 900
900 (this color)
#573240
oklch(36.8% 0.057 356.1)
-
Step 950
950
#351F27
oklch(27.1% 0.036 356.4)
#573240 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) | #373940 | 0.061 |
| Deuteranopia (no green cones) | #40403F | 0.058 |
| Tritanopia (no blue cones) | #5C3037 | 0.017 |
| Achromatopsia (no color) | #3D3D3D | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573240
#573240
oklch(36.8% 0.057 356.1)
- #16493E
#16493E
oklch(36.8% 0.057 176)
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 #573240, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.063
- Onyx #343A40 ΔE 0.066
- Brownish Purple #76424E ΔE 0.080
- Grape Purple #5D1451 ΔE 0.081
- Gunmetal #293241 ΔE 0.085
- Space Cadet #2B2D42 ΔE 0.087
- Chestnut #742802 ΔE 0.088
Use #573240 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.