#573333
Closest named color: Purple Brown (#673A3F). oklch(36.5% 0.052 19.9), rgb(87, 51, 51).
Aa
White text reads best on this color (10.90:1).
About this color
#573333 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.052 and its hue 20°. 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 10.90:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.052) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.92:1 |
| White text | 10.90:1 |
Values
| HEX | #573333 |
| RGB | rgb(87, 51, 51) |
| HSL | hsl(0, 26%, 27%) |
| OKLCH | oklch(36.5% 0.052 19.9) |
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 #573333 | 10.90:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #573333 | 1.92:1 | Fails | Lc 8.8 | Not readable |
| #573333 text on white | 10.90:1 | AAA | Lc 95.1 | Preferred for body text |
| #573333 text on black | 1.92:1 | Fails | Lc -7.5 | 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E7
oklch(93.6% 0.011 17.4)
-
Step 200
200
#E7D4D3
oklch(88.5% 0.021 21.2)
-
Step 300
300
#D9B7B6
oklch(80.9% 0.039 20)
-
Step 400
400
#C59190
oklch(70.6% 0.063 20)
-
Step 500
500
#B57675
oklch(63.1% 0.08 20.5)
-
Step 600
600
#A05E5E
oklch(55.6% 0.087 20.2)
-
Step 700
700
#894D4D
oklch(49.1% 0.081 20.4)
-
Step 800
800
#6F3F40
oklch(42.6% 0.067 18.9)
-
Step 900
900 (this color)
#573333
oklch(36.5% 0.052 19.9)
-
Step 950
950
#352020
oklch(27% 0.033 19.4)
#573333 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) | #3A3833 | 0.055 |
| Deuteranopia (no green cones) | #434032 | 0.053 |
| Tritanopia (no blue cones) | #5E2F33 | 0.017 |
| Achromatopsia (no color) | #3D3D3D | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573333
#573333
oklch(36.5% 0.052 19.9)
- #144749
#144749
oklch(36.6% 0.053 198.8)
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 #573333, 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 0.059
- Onyx #343A40 ΔE 0.065
- Chestnut #742802 ΔE 0.073
- Reddy Brown #6E1005 ΔE 0.080
- Mud Brown #60460F ΔE 0.084
- Brownish Purple #76424E ΔE 0.084
- Gunmetal #293241 ΔE 0.087
Use #573333 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.