#523737
Closest named color: Purple Brown (#673A3F). oklch(36.8% 0.039 19.1), rgb(82, 55, 55).
Aa
White text reads best on this color (10.71:1).
About this color
#523737 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.039 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.045 away. White text reads best on it, at 10.71:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.96:1 |
| White text | 10.71:1 |
Values
| HEX | #523737 |
| RGB | rgb(82, 55, 55) |
| HSL | hsl(0, 20%, 27%) |
| OKLCH | oklch(36.8% 0.039 19.1) |
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 #523737 | 10.71:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #523737 | 1.96:1 | Fails | Lc 9.1 | Not readable |
| #523737 text on white | 10.71:1 | AAA | Lc 94.8 | Preferred for body text |
| #523737 text on black | 1.96:1 | Fails | Lc -7.8 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#EFE8E7
oklch(93.6% 0.008 27.2)
-
Step 200
200
#E4D5D5
oklch(88.5% 0.017 17.5)
-
Step 300
300
#D3BAB9
oklch(81% 0.029 20.5)
-
Step 400
400
#BC9595
oklch(70.6% 0.047 18.3)
-
Step 500
500
#AB7B7B
oklch(63.1% 0.06 18.9)
-
Step 600
600
#966464
oklch(55.6% 0.065 19.3)
-
Step 700
700
#805353
oklch(49.2% 0.061 19.5)
-
Step 800
800
#684444
oklch(42.8% 0.05 19.3)
-
Step 900
900 (this color)
#523737
oklch(36.8% 0.039 19.1)
-
Step 950
950
#322222
oklch(27.2% 0.025 18.8)
#523737 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) | #3C3B37 | 0.041 |
| Deuteranopia (no green cones) | #424037 | 0.039 |
| Tritanopia (no blue cones) | #573437 | 0.012 |
| Achromatopsia (no color) | #3E3E3E | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #523737
#523737
oklch(36.8% 0.039 19.1)
- #254647
#254647
oklch(36.9% 0.039 198.1)
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 #523737, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.046
- Onyx #343A40 ΔE 0.054
- Gunmetal #293241 ΔE 0.079
- Charcoal #264653 ΔE 0.081
- Mud Brown #60460F ΔE 0.081
- Chestnut #742802 ΔE 0.083
- Dark Slate Gray #2F4F4F ΔE 0.084
Use #523737 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.