#573633
Closest named color: Purple Brown (#673A3F). oklch(37.1% 0.048 25.3), rgb(87, 54, 51).
Aa
White text reads best on this color (10.60:1).
About this color
#573633 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.048 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.039 away. White text reads best on it, at 10.60:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.98:1 |
| White text | 10.60:1 |
Values
| HEX | #573633 |
| RGB | rgb(87, 54, 51) |
| HSL | hsl(5, 26%, 27%) |
| OKLCH | oklch(37.1% 0.048 25.3) |
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 #573633 | 10.60:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #573633 | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #573633 text on white | 10.60:1 | AAA | Lc 94.5 | Preferred for body text |
| #573633 text on black | 1.98:1 | Fails | Lc -8.1 | 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
#F1E7E6
oklch(93.6% 0.011 24.3)
-
Step 200
200
#E6D4D2
oklch(88.4% 0.02 25.2)
-
Step 300
300
#D7B8B5
oklch(80.9% 0.036 24.5)
-
Step 400
400
#C2938E
oklch(70.6% 0.058 25.6)
-
Step 500
500
#B27873
oklch(63.1% 0.074 24.8)
-
Step 600
600
#9D605B
oklch(55.5% 0.081 25)
-
Step 700
700
#864F4B
oklch(49% 0.075 24.6)
-
Step 800
800
#6D413D
oklch(42.6% 0.062 25.6)
-
Step 900
900 (this color)
#573633
oklch(37.1% 0.048 25.3)
-
Step 950
950
#34211F
oklch(27.1% 0.03 25.9)
#573633 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) | #3D3B33 | 0.049 |
| Deuteranopia (no green cones) | #454133 | 0.045 |
| Tritanopia (no blue cones) | #5E3235 | 0.018 |
| Achromatopsia (no color) | #3F3F3F | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573633
#573633
oklch(37.1% 0.048 25.3)
- #1C474C
#1C474C
oklch(37% 0.048 205.6)
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 #573633, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.055
- Onyx #343A40 ΔE 0.064
- Chestnut #742802 ΔE 0.072
- Mud Brown #60460F ΔE 0.076
- Brownish Purple #76424E ΔE 0.081
- Reddy Brown #6E1005 ΔE 0.084
- Gunmetal #293241 ΔE 0.089
Use #573633 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.