#513B40
Closest named color: Charcoal Grey (#3C4142). oklch(37.8% 0.032 3.6), rgb(81, 59, 64).
Aa
White text reads best on this color (10.24:1).
About this color
#513B40 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.032 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.039 away. White text reads best on it, at 10.24:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.032) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.04:1 |
| White text | 10.24:1 |
Values
| HEX | #513B40 |
| RGB | rgb(81, 59, 64) |
| HSL | hsl(346, 16%, 27%) |
| OKLCH | oklch(37.8% 0.032 3.6) |
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 #513B40 | 10.24:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #513B40 | 2.04:1 | Fails | Lc 10.2 | Not readable |
| #513B40 text on white | 10.24:1 | AAA | Lc 93.8 | Preferred for body text |
| #513B40 text on black | 2.04:1 | Fails | Lc -8.8 | 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
#F7F4F5
oklch(97% 0.003 354.7)
-
Step 100
100
#EEE8E9
oklch(93.6% 0.007 5.6)
-
Step 200
200
#E1D6D8
oklch(88.5% 0.012 4.8)
-
Step 300
300
#CFBBBF
oklch(81% 0.023 4)
-
Step 400
400
#B6979E
oklch(70.7% 0.038 2.9)
-
Step 500
500
#A47D86
oklch(63% 0.05 3.3)
-
Step 600
600
#8F6670
oklch(55.6% 0.054 2.9)
-
Step 700
700
#79555E
oklch(49.1% 0.049 2.6)
-
Step 800
800
#63464C
oklch(42.8% 0.041 5.2)
-
Step 900
900 (this color)
#513B40
oklch(37.8% 0.032 3.6)
-
Step 950
950
#2F2225
oklch(26.9% 0.021 3.2)
#513B40 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) | #3E3E40 | 0.034 |
| Deuteranopia (no green cones) | #434240 | 0.032 |
| Tritanopia (no blue cones) | #553A3D | 0.008 |
| Achromatopsia (no color) | #414141 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513B40
#513B40
oklch(37.8% 0.032 3.6)
- #2E4844
#2E4844
oklch(37.9% 0.033 183.9)
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 #513B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.039
- Purple Brown #673A3F ΔE 0.042
- Onyx #343A40 ΔE 0.052
- Charcoal #264653 ΔE 0.071
- Dark Grey Blue #29465B ΔE 0.073
- Dark Slate Gray #2F4F4F ΔE 0.073
- Brownish Purple #76424E ΔE 0.079
- Gunmetal #293241 ΔE 0.079
Use #513B40 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.