#5A3731
Closest named color: Purple Brown (#673A3F). oklch(37.7% 0.052 30.3), rgb(90, 55, 49).
Aa
White text reads best on this color (10.36:1).
About this color
#5A3731 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.052 and its hue 30°. 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 10.36:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.052) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.02:1 |
| White text | 10.36:1 |
Values
| HEX | #5A3731 |
| RGB | rgb(90, 55, 49) |
| HSL | hsl(9, 29%, 27%) |
| OKLCH | oklch(37.7% 0.052 30.3) |
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 #5A3731 | 10.36:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #5A3731 | 2.02:1 | Fails | Lc 10.0 | Not readable |
| #5A3731 text on white | 10.36:1 | AAA | Lc 93.9 | Preferred for body text |
| #5A3731 text on black | 2.02:1 | Fails | Lc -8.6 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F1E7E5
oklch(93.5% 0.011 31.1)
-
Step 200
200
#E7D4D1
oklch(88.5% 0.022 28.3)
-
Step 300
300
#D9B8B2
oklch(81% 0.039 30.1)
-
Step 400
400
#C4938A
oklch(70.7% 0.061 30.5)
-
Step 500
500
#B4776D
oklch(63% 0.079 29.7)
-
Step 600
600
#A05F55
oklch(55.6% 0.087 29.5)
-
Step 700
700
#884F45
oklch(49.1% 0.079 30.8)
-
Step 800
800
#6F4139
oklch(42.8% 0.066 30.6)
-
Step 900
900 (this color)
#5A3731
oklch(37.7% 0.052 30.3)
-
Step 950
950
#35201D
oklch(27% 0.033 28.4)
#5A3731 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) | #3F3C30 | 0.052 |
| Deuteranopia (no green cones) | #474331 | 0.049 |
| Tritanopia (no blue cones) | #613235 | 0.021 |
| Achromatopsia (no color) | #404040 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A3731
#5A3731
oklch(37.7% 0.052 30.3)
- #1A4951
#1A4951
oklch(37.7% 0.052 210.5)
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 #5A3731, 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 0.059
- Chestnut #742802 ΔE 0.066
- Mud Brown #60460F ΔE 0.070
- Onyx #343A40 ΔE 0.070
- Brownish Purple #76424E ΔE 0.076
- Reddy Brown #6E1005 ΔE 0.082
- Dark Slate Gray #2F4F4F ΔE 0.092
Use #5A3731 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.