#503D40
Closest named color: Charcoal Grey (#3C4142). oklch(38.2% 0.027 7.8), rgb(80, 61, 64).
Aa
White text reads best on this color (10.08:1).
About this color
#503D40 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 0.035 away. White text reads best on it, at 10.08:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.08:1 |
| White text | 10.08:1 |
Values
| HEX | #503D40 |
| RGB | rgb(80, 61, 64) |
| HSL | hsl(351, 13%, 28%) |
| OKLCH | oklch(38.2% 0.027 7.8) |
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 #503D40 | 10.08:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #503D40 | 2.08:1 | Fails | Lc 10.5 | Not readable |
| #503D40 text on white | 10.08:1 | AAA | Lc 93.4 | Preferred for body text |
| #503D40 text on black | 2.08:1 | Fails | Lc -9.1 | 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EEE8E9
oklch(93.6% 0.007 5.6)
-
Step 200
200
#E0D6D8
oklch(88.5% 0.011 3.5)
-
Step 300
300
#CDBBBE
oklch(80.8% 0.021 6.1)
-
Step 400
400
#B4999D
oklch(70.8% 0.033 7.9)
-
Step 500
500
#A17F85
oklch(63.1% 0.043 6.5)
-
Step 600
600
#8B696E
oklch(55.6% 0.044 8.8)
-
Step 700
700
#76575C
oklch(49.1% 0.042 8)
-
Step 800
800
#60474B
oklch(42.6% 0.035 8)
-
Step 900
900 (this color)
#503D40
oklch(38.2% 0.027 7.8)
-
Step 950
950
#2E2325
oklch(27% 0.017 6.1)
#503D40 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) | #404040 | 0.029 |
| Deuteranopia (no green cones) | #444340 | 0.027 |
| Tritanopia (no blue cones) | #543C3E | 0.008 |
| Achromatopsia (no color) | #424242 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503D40
#503D40
oklch(38.2% 0.027 7.8)
- #324845
#324845
oklch(38.2% 0.028 185.6)
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 #503D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.035
- Purple Brown #673A3F ΔE 0.044
- Onyx #343A40 ΔE 0.051
- Charcoal #264653 ΔE 0.067
- Dark Slate Gray #2F4F4F ΔE 0.068
- Dark Grey Blue #29465B ΔE 0.070
- Brownish Purple #76424E ΔE 0.079
- Dark Blue Grey #1F3B4D ΔE 0.080
Use #503D40 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.