#573B4A
Closest named color: Purple Brown (#673A3F). oklch(39% 0.046 346.1), rgb(87, 59, 74).
Aa
White text reads best on this color (9.86:1).
About this color
#573B4A is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.046 and its hue 346°. 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 9.86:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.046) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #573B4A |
| RGB | rgb(87, 59, 74) |
| HSL | hsl(328, 19%, 29%) |
| OKLCH | oklch(39% 0.046 346.1) |
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 #573B4A | 9.86:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #573B4A | 2.12:1 | Fails | Lc 11.1 | Not readable |
| #573B4A text on white | 9.86:1 | AAA | Lc 92.8 | Preferred for body text |
| #573B4A text on black | 2.12:1 | Fails | Lc -9.6 | 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
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#EFE7EB
oklch(93.5% 0.01 345.4)
-
Step 200
200
#E3D4DC
oklch(88.4% 0.02 344)
-
Step 300
300
#D2B8C5
oklch(80.9% 0.034 346.2)
-
Step 400
400
#BB93A8
oklch(70.7% 0.056 345.8)
-
Step 500
500
#A97892
oklch(63% 0.07 346.2)
-
Step 600
600
#94617D
oklch(55.6% 0.076 345.8)
-
Step 700
700
#7E5069
oklch(49.1% 0.071 346.2)
-
Step 800
800
#664256
oklch(42.7% 0.058 345.4)
-
Step 900
900 (this color)
#573B4A
oklch(39% 0.046 346.1)
-
Step 950
950
#312129
oklch(27% 0.028 347.7)
#573B4A 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) | #3D414B | 0.047 |
| Deuteranopia (no green cones) | #444549 | 0.044 |
| Tritanopia (no blue cones) | #5B3B40 | 0.018 |
| Achromatopsia (no color) | #434343 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573B4A
#573B4A
oklch(39% 0.046 346.1)
- #2C4D3F
#2C4D3F
oklch(39% 0.046 165.3)
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 #573B4A, 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 0.054
- Brownish Purple #76424E ΔE 0.065
- Onyx #343A40 ΔE 0.066
- Dark Grey Blue #29465B ΔE 0.076
- Charcoal #264653 ΔE 0.079
- Dark Slate Gray #2F4F4F ΔE 0.082
- Dark Blue Grey #1F3B4D ΔE 0.090
Use #573B4A 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.