#5B3733
Closest named color: Purple Brown (#673A3F). oklch(37.9% 0.052 26.7), rgb(91, 55, 51).
Aa
White text reads best on this color (10.29:1).
About this color
#5B3733 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.052 and its hue 27°. 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 10.29:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.052) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.03:1 |
| White text | 10.29:1 |
Values
| HEX | #5B3733 |
| RGB | rgb(91, 55, 51) |
| HSL | hsl(6, 28%, 28%) |
| OKLCH | oklch(37.9% 0.052 26.7) |
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 #5B3733 | 10.29:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #5B3733 | 2.03:1 | Fails | Lc 10.2 | Not readable |
| #5B3733 text on white | 10.29:1 | AAA | Lc 93.8 | Preferred for body text |
| #5B3733 text on black | 2.03:1 | Fails | Lc -8.8 | 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
#F1E7E6
oklch(93.6% 0.011 24.3)
-
Step 200
200
#E7D4D1
oklch(88.5% 0.022 28.3)
-
Step 300
300
#D9B8B3
oklch(81% 0.039 28.1)
-
Step 400
400
#C5928C
oklch(70.7% 0.063 26.4)
-
Step 500
500
#B5766F
oklch(63% 0.081 26.5)
-
Step 600
600
#A05E57
oklch(55.5% 0.088 26.7)
-
Step 700
700
#894E48
oklch(49.2% 0.081 26.6)
-
Step 800
800
#6F403B
oklch(42.7% 0.067 26.7)
-
Step 900
900 (this color)
#5B3733
oklch(37.9% 0.052 26.7)
-
Step 950
950
#35201E
oklch(27% 0.033 25.5)
#5B3733 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) | #3F3C33 | 0.053 |
| Deuteranopia (no green cones) | #474332 | 0.050 |
| Tritanopia (no blue cones) | #623236 | 0.020 |
| Achromatopsia (no color) | #404040 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3733
#5B3733
oklch(37.9% 0.052 26.7)
- #194A50
#194A50
oklch(37.9% 0.053 206.4)
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 #5B3733, 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 0.060
- Chestnut #742802 ΔE 0.067
- Mud Brown #60460F ΔE 0.072
- Onyx #343A40 ΔE 0.072
- Brownish Purple #76424E ΔE 0.073
- Reddy Brown #6E1005 ΔE 0.083
- Dark Slate Gray #2F4F4F ΔE 0.093
Use #5B3733 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.