#573B38
Closest named color: Purple Brown (#673A3F). oklch(38.3% 0.04 25.9), rgb(87, 59, 56).
Aa
White text reads best on this color (10.05:1).
About this color
#573B38 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.040 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.034 away. White text reads best on it, at 10.05:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.040) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #573B38 |
| RGB | rgb(87, 59, 56) |
| HSL | hsl(6, 22%, 28%) |
| OKLCH | oklch(38.3% 0.04 25.9) |
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 #573B38 | 10.05:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #573B38 | 2.08:1 | Fails | Lc 10.7 | Not readable |
| #573B38 text on white | 10.05:1 | AAA | Lc 93.3 | Preferred for body text |
| #573B38 text on black | 2.08:1 | Fails | Lc -9.2 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E8E7
oklch(93.7% 0.009 26)
-
Step 200
200
#E4D5D3
oklch(88.5% 0.017 26.7)
-
Step 300
300
#D4BAB6
oklch(81% 0.03 28.2)
-
Step 400
400
#BD9691
oklch(70.8% 0.048 26.8)
-
Step 500
500
#AC7B76
oklch(63.1% 0.062 25.5)
-
Step 600
600
#97645F
oklch(55.6% 0.067 25.6)
-
Step 700
700
#81534E
oklch(49.2% 0.063 26.4)
-
Step 800
800
#694440
oklch(42.8% 0.052 26.2)
-
Step 900
900 (this color)
#573B38
oklch(38.3% 0.04 25.9)
-
Step 950
950
#322220
oklch(27.1% 0.025 26.9)
#573B38 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) | #413F38 | 0.041 |
| Deuteranopia (no green cones) | #474438 | 0.038 |
| Tritanopia (no blue cones) | #5D383A | 0.015 |
| Achromatopsia (no color) | #424242 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573B38
#573B38
oklch(38.3% 0.04 25.9)
- #274A4E
#274A4E
oklch(38.4% 0.041 205.1)
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 #573B38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.049
- Onyx #343A40 ΔE 0.064
- Mud Brown #60460F ΔE 0.070
- Brownish Purple #76424E ΔE 0.073
- Chestnut #742802 ΔE 0.078
- Dark Slate Gray #2F4F4F ΔE 0.080
- Charcoal #264653 ΔE 0.083
Use #573B38 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.