#503F37
Closest named color: Charcoal Grey (#3C4142). oklch(38.3% 0.027 46.5), rgb(80, 63, 55).
Aa
White text reads best on this color (9.96:1).
About this color
#503F37 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.036 away. White text reads best on it, at 9.96:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.10:1 |
| White text | 9.96:1 |
Values
| HEX | #503F37 |
| RGB | rgb(80, 63, 55) |
| HSL | hsl(19, 19%, 26%) |
| OKLCH | oklch(38.3% 0.027 46.5) |
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 #503F37 | 9.96:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #503F37 | 2.10:1 | Fails | Lc 10.8 | Not readable |
| #503F37 text on white | 9.96:1 | AAA | Lc 93.1 | Preferred for body text |
| #503F37 text on black | 2.10:1 | Fails | Lc -9.4 | 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
#EDE9E6
oklch(93.6% 0.006 59.6)
-
Step 200
200
#E0D7D3
oklch(88.5% 0.011 45.7)
-
Step 300
300
#CDBDB6
oklch(81% 0.021 45.2)
-
Step 400
400
#B39B90
oklch(70.8% 0.033 46.1)
-
Step 500
500
#A08274
oklch(63.1% 0.042 46.4)
-
Step 600
600
#8A6B5D
oklch(55.5% 0.045 45.5)
-
Step 700
700
#755A4C
oklch(49.1% 0.042 48.7)
-
Step 800
800
#60493F
oklch(42.7% 0.036 44.6)
-
Step 900
900 (this color)
#503F37
oklch(38.3% 0.027 46.5)
-
Step 950
950
#2E241F
oklch(27% 0.018 48)
#503F37 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) | #434036 | 0.023 |
| Deuteranopia (no green cones) | #474437 | 0.021 |
| Tritanopia (no blue cones) | #553C3D | 0.018 |
| Achromatopsia (no color) | #434343 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503F37
#503F37
oklch(38.3% 0.027 46.5)
- #34464F
#34464F
oklch(38.2% 0.027 230)
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 #503F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.036
- Purple Brown #673A3F ΔE 0.049
- Onyx #343A40 ΔE 0.055
- Mud Brown #60460F ΔE 0.064
- Dark Slate Gray #2F4F4F ΔE 0.066
- Charcoal #264653 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.077
- Dark Olive #373E02 ΔE 0.083
Use #503F37 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.