#503D37
Closest named color: Charcoal Grey (#3C4142). oklch(37.9% 0.029 38.2), rgb(80, 61, 55).
Aa
White text reads best on this color (10.17:1).
About this color
#503D37 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.029. 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 10.17:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.06:1 |
| White text | 10.17:1 |
Values
| HEX | #503D37 |
| RGB | rgb(80, 61, 55) |
| HSL | hsl(14, 19%, 26%) |
| OKLCH | oklch(37.9% 0.029 38.2) |
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 #503D37 | 10.17:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #503D37 | 2.06:1 | Fails | Lc 10.3 | Not readable |
| #503D37 text on white | 10.17:1 | AAA | Lc 93.6 | Preferred for body text |
| #503D37 text on black | 2.06:1 | Fails | Lc -8.9 | 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
#EEE8E7
oklch(93.5% 0.007 28.8)
-
Step 200
200
#E1D7D3
oklch(88.6% 0.012 43.3)
-
Step 300
300
#CEBCB7
oklch(80.9% 0.022 36)
-
Step 400
400
#B59A91
oklch(70.8% 0.035 39.3)
-
Step 500
500
#A28176
oklch(63.2% 0.044 39.2)
-
Step 600
600
#8D6A5F
oklch(55.6% 0.048 38.2)
-
Step 700
700
#77584E
oklch(49% 0.044 38.6)
-
Step 800
800
#614840
oklch(42.6% 0.037 38.5)
-
Step 900
900 (this color)
#503D37
oklch(37.9% 0.029 38.2)
-
Step 950
950
#2F2320
oklch(26.9% 0.019 34.4)
#503D37 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) | #413F37 | 0.027 |
| Deuteranopia (no green cones) | #464337 | 0.025 |
| Tritanopia (no blue cones) | #553A3B | 0.016 |
| Achromatopsia (no color) | #414141 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503D37
#503D37
oklch(37.9% 0.029 38.2)
- #31464C
#31464C
oklch(37.9% 0.028 217.3)
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 #503D37, 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 0.048
- Onyx #343A40 ΔE 0.053
- Mud Brown #60460F ΔE 0.068
- Dark Slate Gray #2F4F4F ΔE 0.070
- Charcoal #264653 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.077
- Gunmetal #293241 ΔE 0.084
Use #503D37 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.