#503D47
Closest named color: Charcoal Grey (#3C4142). oklch(38.4% 0.031 345.7), rgb(80, 61, 71).
Aa
White text reads best on this color (10.00:1).
About this color
#503D47 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.031 and its hue 346°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.038 away. White text reads best on it, at 10.00:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #503D47 |
| RGB | rgb(80, 61, 71) |
| HSL | hsl(328, 13%, 28%) |
| OKLCH | oklch(38.4% 0.031 345.7) |
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 #503D47 | 10.00:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #503D47 | 2.09:1 | Fails | Lc 10.7 | Not readable |
| #503D47 text on white | 10.00:1 | AAA | Lc 93.2 | Preferred for body text |
| #503D47 text on black | 2.09:1 | Fails | Lc -9.3 | 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
#F7F5F6
oklch(97.2% 0.002 345.2)
-
Step 100
100
#EDE8EB
oklch(93.6% 0.007 340.4)
-
Step 200
200
#E0D6DB
oklch(88.6% 0.013 345.5)
-
Step 300
300
#CCBBC4
oklch(80.9% 0.023 344.3)
-
Step 400
400
#B398A6
oklch(70.8% 0.037 345.5)
-
Step 500
500
#9F7E90
oklch(63% 0.048 344.6)
-
Step 600
600
#8A677A
oklch(55.5% 0.052 345.2)
-
Step 700
700
#755667
oklch(49.1% 0.048 345)
-
Step 800
800
#5F4654
oklch(42.6% 0.04 344.3)
-
Step 900
900 (this color)
#503D47
oklch(38.4% 0.031 345.7)
-
Step 950
950
#2E2328
oklch(27.1% 0.019 349.4)
#503D47 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) | #3E4147 | 0.033 |
| Deuteranopia (no green cones) | #424346 | 0.030 |
| Tritanopia (no blue cones) | #533D40 | 0.013 |
| Achromatopsia (no color) | #424242 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503D47
#503D47
oklch(38.4% 0.031 345.7)
- #344940
#344940
oklch(38.5% 0.03 166.5)
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 #503D47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.038
- Purple Brown #673A3F ΔE 0.044
- Onyx #343A40 ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.065
- Charcoal #264653 ΔE 0.065
- Dark Slate Gray #2F4F4F ΔE 0.069
- Brownish Purple #76424E ΔE 0.076
- Dark Blue Grey #1F3B4D ΔE 0.078
Use #503D47 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.