#573F3D
Closest named color: Purple Brown (#673A3F). oklch(39.4% 0.034 24.1), rgb(87, 63, 61).
Aa
White text reads best on this color (9.61:1).
About this color
#573F3D is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.034 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.033 away. White text reads best on it, at 9.61:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #573F3D |
| RGB | rgb(87, 63, 61) |
| HSL | hsl(5, 18%, 29%) |
| OKLCH | oklch(39.4% 0.034 24.1) |
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 #573F3D | 9.61:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #573F3D | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #573F3D text on white | 9.61:1 | AAA | Lc 92.2 | Preferred for body text |
| #573F3D text on black | 2.18:1 | Fails | Lc -10.2 | 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
#F8F5F4
oklch(97.2% 0.003 39.5)
-
Step 100
100
#EFE8E7
oklch(93.6% 0.008 27.2)
-
Step 200
200
#E2D6D4
oklch(88.5% 0.014 28.9)
-
Step 300
300
#D1BBB9
oklch(81% 0.025 23.9)
-
Step 400
400
#B99794
oklch(70.7% 0.041 24.1)
-
Step 500
500
#A77E7A
oklch(63.2% 0.052 25)
-
Step 600
600
#926663
oklch(55.5% 0.057 23.4)
-
Step 700
700
#7C5552
oklch(49.1% 0.053 24.1)
-
Step 800
800
#654643
oklch(42.8% 0.043 25.2)
-
Step 900
900 (this color)
#573F3D
oklch(39.4% 0.034 24.1)
-
Step 950
950
#302221
oklch(26.8% 0.022 23.3)
#573F3D 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) | #44423D | 0.034 |
| Deuteranopia (no green cones) | #49473D | 0.033 |
| Tritanopia (no blue cones) | #5C3C3F | 0.014 |
| Achromatopsia (no color) | #454545 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F3D
#573F3D
oklch(39.4% 0.034 24.1)
- #2F4B4E
#2F4B4E
oklch(39.2% 0.034 204.4)
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 #573F3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.047
- Onyx #343A40 ΔE 0.066
- Brownish Purple #76424E ΔE 0.067
- Mud Brown #60460F ΔE 0.068
- Dark Slate Gray #2F4F4F ΔE 0.072
- Charcoal #264653 ΔE 0.079
- Dark Grey Blue #29465B ΔE 0.081
Use #573F3D 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.