#513F40
Closest named color: Charcoal Grey (#3C4142). oklch(38.7% 0.025 14.6), rgb(81, 63, 64).
Aa
White text reads best on this color (9.83:1).
About this color
#513F40 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.025. 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 9.83:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.13:1 |
| White text | 9.83:1 |
Values
| HEX | #513F40 |
| RGB | rgb(81, 63, 64) |
| HSL | hsl(357, 12%, 28%) |
| OKLCH | oklch(38.7% 0.025 14.6) |
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 #513F40 | 9.83:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #513F40 | 2.13:1 | Fails | Lc 11.1 | Not readable |
| #513F40 text on white | 9.83:1 | AAA | Lc 92.8 | Preferred for body text |
| #513F40 text on black | 2.13:1 | 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE8E9
oklch(93.5% 0.006 3.3)
-
Step 200
200
#E0D6D7
oklch(88.4% 0.011 10.4)
-
Step 300
300
#CDBCBD
oklch(81% 0.019 13.5)
-
Step 400
400
#B3999B
oklch(70.7% 0.031 12.7)
-
Step 500
500
#A08082
oklch(63.1% 0.04 14)
-
Step 600
600
#8A6A6C
oklch(55.7% 0.041 14.3)
-
Step 700
700
#75585A
oklch(49.1% 0.038 14)
-
Step 800
800
#604849
oklch(42.8% 0.033 15.7)
-
Step 900
900 (this color)
#513F40
oklch(38.7% 0.025 14.6)
-
Step 950
950
#2E2324
oklch(26.9% 0.017 12.1)
#513F40 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) | #424140 | 0.027 |
| Deuteranopia (no green cones) | #464540 | 0.026 |
| Tritanopia (no blue cones) | #553D3F | 0.009 |
| Achromatopsia (no color) | #434343 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513F40
#513F40
oklch(38.7% 0.025 14.6)
- #354948
#354948
oklch(38.8% 0.025 192.3)
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 #513F40, 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 0.043
- Onyx #343A40 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.065
- Charcoal #264653 ΔE 0.068
- Dark Grey Blue #29465B ΔE 0.070
- Mud Brown #60460F ΔE 0.075
- Brownish Purple #76424E ΔE 0.076
Use #513F40 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.