#573121
Closest named color: Purple Brown (#673A3F). oklch(35.7% 0.061 43.3), rgb(87, 49, 33).
Aa
White text reads best on this color (11.25:1).
About this color
#573121 is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.061 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.058 away. White text reads best on it, at 11.25:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.061) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.86:1 |
| White text | 11.25:1 |
Values
| HEX | #573121 |
| RGB | rgb(87, 49, 33) |
| HSL | hsl(18, 45%, 24%) |
| OKLCH | oklch(35.7% 0.061 43.3) |
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 #573121 | 11.25:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #573121 | 1.86:1 | Fails | Lc 8.1 | Not readable |
| #573121 text on white | 11.25:1 | AAA | Lc 95.8 | Preferred for body text |
| #573121 text on black | 1.86:1 | Fails | Lc 0.0 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F2E7E3
oklch(93.6% 0.013 41.2)
-
Step 200
200
#E9D4CC
oklch(88.5% 0.026 42.1)
-
Step 300
300
#DBB8A9
oklch(80.9% 0.046 44.5)
-
Step 400
400
#C8927C
oklch(70.7% 0.073 43.1)
-
Step 500
500
#B9765A
oklch(63% 0.094 43.3)
-
Step 600
600
#A55E40
oklch(55.7% 0.103 43.2)
-
Step 700
700
#8D4D32
oklch(49.1% 0.095 43)
-
Step 800
800
#723F2A
oklch(42.5% 0.078 42.7)
-
Step 900
900 (this color)
#573121
oklch(35.7% 0.061 43.3)
-
Step 950
950
#362017
oklch(26.9% 0.038 43)
#573121 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) | #3B3620 | 0.055 |
| Deuteranopia (no green cones) | #443E21 | 0.051 |
| Tritanopia (no blue cones) | #5F2A2D | 0.034 |
| Achromatopsia (no color) | #3B3B3B | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573121
#573121
oklch(35.7% 0.061 43.3)
- #0B4354
#0B4354
oklch(35.7% 0.061 223.7)
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 #573121, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.058
- Chestnut #742802 ΔE 0.062
- Charcoal Grey #3C4142 ΔE 0.070
- Reddy Brown #6E1005 ΔE 0.071
- Mud Brown #60460F ΔE 0.073
- Onyx #343A40 ΔE 0.075
- Claret #680018 ΔE 0.085
- Dark Olive #373E02 ΔE 0.085
Use #573121 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.