#523F37
Closest named color: Charcoal Grey (#3C4142). oklch(38.6% 0.03 44), rgb(82, 63, 55).
Aa
White text reads best on this color (9.88:1).
About this color
#523F37 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.040 away. White text reads best on it, at 9.88:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.12:1 |
| White text | 9.88:1 |
Values
| HEX | #523F37 |
| RGB | rgb(82, 63, 55) |
| HSL | hsl(18, 20%, 27%) |
| OKLCH | oklch(38.6% 0.03 44) |
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 #523F37 | 9.88:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #523F37 | 2.12:1 | Fails | Lc 11.0 | Not readable |
| #523F37 text on white | 9.88:1 | AAA | Lc 92.9 | Preferred for body text |
| #523F37 text on black | 2.12:1 | Fails | Lc -9.6 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EEE8E6
oklch(93.5% 0.007 39.5)
-
Step 200
200
#E1D7D3
oklch(88.6% 0.012 43.3)
-
Step 300
300
#CEBCB5
oklch(80.8% 0.023 42.5)
-
Step 400
400
#B59A8F
oklch(70.7% 0.036 43.4)
-
Step 500
500
#A28173
oklch(63.1% 0.046 44.2)
-
Step 600
600
#8D6A5C
oklch(55.6% 0.05 42.8)
-
Step 700
700
#78594B
oklch(49.2% 0.047 45.4)
-
Step 800
800
#61483E
oklch(42.6% 0.038 42.8)
-
Step 900
900 (this color)
#523F37
oklch(38.6% 0.03 44)
-
Step 950
950
#2F241F
oklch(27.1% 0.019 45.7)
#523F37 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) | #444136 | 0.026 |
| Deuteranopia (no green cones) | #484537 | 0.025 |
| Tritanopia (no blue cones) | #573C3D | 0.018 |
| Achromatopsia (no color) | #434343 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #523F37
#523F37
oklch(38.6% 0.03 44)
- #324850
#324850
oklch(38.7% 0.03 222.5)
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 #523F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.040
- Purple Brown #673A3F ΔE 0.046
- Onyx #343A40 ΔE 0.059
- Mud Brown #60460F ΔE 0.062
- Dark Slate Gray #2F4F4F ΔE 0.068
- Charcoal #264653 ΔE 0.074
- Dark Grey Blue #29465B ΔE 0.079
- Brownish Purple #76424E ΔE 0.080
Use #523F37 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.