#573F3A
Closest named color: Purple Brown (#673A3F). oklch(39.3% 0.035 32), rgb(87, 63, 58).
Aa
White text reads best on this color (9.64:1).
About this color
#573F3A is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.035 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.035 away. White text reads best on it, at 9.64:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.17:1 |
| White text | 9.64:1 |
Values
| HEX | #573F3A |
| RGB | rgb(87, 63, 58) |
| HSL | hsl(10, 20%, 28%) |
| OKLCH | oklch(39.3% 0.035 32) |
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 #573F3A | 9.64:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #573F3A | 2.17:1 | Fails | Lc 11.6 | Not readable |
| #573F3A text on white | 9.64:1 | AAA | Lc 92.3 | Preferred for body text |
| #573F3A text on black | 2.17:1 | Fails | Lc -10.1 | 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
#F8F5F4
oklch(97.2% 0.003 39.5)
-
Step 100
100
#EFE8E7
oklch(93.6% 0.008 27.2)
-
Step 200
200
#E3D6D3
oklch(88.6% 0.015 33.1)
-
Step 300
300
#D1BBB6
oklch(80.9% 0.026 32.9)
-
Step 400
400
#B99890
oklch(70.7% 0.041 33.9)
-
Step 500
500
#A77E75
oklch(63.1% 0.053 32.6)
-
Step 600
600
#92675E
oklch(55.6% 0.058 32.2)
-
Step 700
700
#7D554D
oklch(49.1% 0.055 31.7)
-
Step 800
800
#654640
oklch(42.7% 0.044 31.2)
-
Step 900
900 (this color)
#573F3A
oklch(39.3% 0.035 32)
-
Step 950
950
#302320
oklch(27.1% 0.021 33.3)
#573F3A 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) | #44423A | 0.034 |
| Deuteranopia (no green cones) | #4A473A | 0.032 |
| Tritanopia (no blue cones) | #5D3C3E | 0.017 |
| Achromatopsia (no color) | #454545 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F3A
#573F3A
oklch(39.3% 0.035 32)
- #2F4B51
#2F4B51
oklch(39.3% 0.035 212.6)
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 #573F3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.035
- Charcoal Grey #3C4142 ΔE 0.047
- Mud Brown #60460F ΔE 0.064
- Onyx #343A40 ΔE 0.066
- Brownish Purple #76424E ΔE 0.069
- Dark Slate Gray #2F4F4F ΔE 0.073
- Charcoal #264653 ΔE 0.080
- Chestnut #742802 ΔE 0.082
Use #573F3A 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.