#57403B
Closest named color: Purple Brown (#673A3F). oklch(39.5% 0.033 32.5), rgb(87, 64, 59).
Aa
White text reads best on this color (9.53:1).
About this color
#57403B is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.033 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.036 away. White text reads best on it, at 9.53:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.033) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #57403B |
| RGB | rgb(87, 64, 59) |
| HSL | hsl(11, 19%, 29%) |
| OKLCH | oklch(39.5% 0.033 32.5) |
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 #57403B | 9.53:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #57403B | 2.20:1 | Fails | Lc 11.9 | Not readable |
| #57403B text on white | 9.53:1 | AAA | Lc 92.0 | Preferred for body text |
| #57403B text on black | 2.20:1 | Fails | Lc -10.4 | 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
#E2D6D3
oklch(88.5% 0.014 34.3)
-
Step 300
300
#D0BBB6
oklch(80.8% 0.025 33.6)
-
Step 400
400
#B89891
oklch(70.7% 0.04 32.4)
-
Step 500
500
#A67F76
oklch(63.2% 0.051 33.3)
-
Step 600
600
#91685F
oklch(55.7% 0.055 32.7)
-
Step 700
700
#7B564E
oklch(49% 0.051 32.6)
-
Step 800
800
#644640
oklch(42.6% 0.043 31.6)
-
Step 900
900 (this color)
#57403B
oklch(39.5% 0.033 32.5)
-
Step 950
950
#302320
oklch(27.1% 0.021 33.3)
#57403B 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) | #45433B | 0.033 |
| Deuteranopia (no green cones) | #4A473B | 0.030 |
| Tritanopia (no blue cones) | #5C3D3F | 0.016 |
| Achromatopsia (no color) | #454545 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57403B
#57403B
oklch(39.5% 0.033 32.5)
- #314B51
#314B51
oklch(39.4% 0.033 213.7)
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 #57403B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.047
- Mud Brown #60460F ΔE 0.063
- Onyx #343A40 ΔE 0.067
- Brownish Purple #76424E ΔE 0.068
- Dark Slate Gray #2F4F4F ΔE 0.071
- Charcoal #264653 ΔE 0.079
- Dark Grey Blue #29465B ΔE 0.082
Use #57403B 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.