#573F43
Closest named color: Purple Brown (#673A3F). oklch(39.5% 0.034 7.6), rgb(87, 63, 67).
Aa
White text reads best on this color (9.55:1).
About this color
#573F43 is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.034 and its hue 8°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.032 away. White text reads best on it, at 9.55:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.19:1 |
| White text | 9.55:1 |
Values
| HEX | #573F43 |
| RGB | rgb(87, 63, 67) |
| HSL | hsl(350, 16%, 29%) |
| OKLCH | oklch(39.5% 0.034 7.6) |
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 #573F43 | 9.55:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #573F43 | 2.19:1 | Fails | Lc 11.9 | Not readable |
| #573F43 text on white | 9.55:1 | AAA | Lc 92.1 | Preferred for body text |
| #573F43 text on black | 2.19:1 | Fails | Lc -10.3 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#EFE8E9
oklch(93.7% 0.008 7.3)
-
Step 200
200
#E2D5D7
oklch(88.4% 0.015 6.7)
-
Step 300
300
#D0BABD
oklch(80.8% 0.025 8.3)
-
Step 400
400
#B8969C
oklch(70.6% 0.041 6.3)
-
Step 500
500
#A67D84
oklch(63.2% 0.052 7.3)
-
Step 600
600
#91666D
oklch(55.7% 0.056 8.3)
-
Step 700
700
#7B545B
oklch(49% 0.053 7.4)
-
Step 800
800
#64454A
oklch(42.6% 0.043 8.4)
-
Step 900
900 (this color)
#573F43
oklch(39.5% 0.034 7.6)
-
Step 950
950
#302224
oklch(27% 0.022 9.1)
#573F43 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) | #434343 | 0.036 |
| Deuteranopia (no green cones) | #484743 | 0.035 |
| Tritanopia (no blue cones) | #5B3D40 | 0.009 |
| Achromatopsia (no color) | #454545 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F43
#573F43
oklch(39.5% 0.034 7.6)
- #314D4A
#314D4A
oklch(39.7% 0.034 187.4)
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 #573F43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.047
- Brownish Purple #76424E ΔE 0.064
- Onyx #343A40 ΔE 0.066
- Dark Slate Gray #2F4F4F ΔE 0.072
- Charcoal #264653 ΔE 0.076
- Mud Brown #60460F ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.077
Use #573F43 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.