#513637
Closest named color: Charcoal Grey (#3C4142). oklch(36.5% 0.039 16.7), rgb(81, 54, 55).
Aa
White text reads best on this color (10.86:1).
About this color
#513637 is a dark, muted red. In OKLCH its lightness is 36%, its chroma 0.039 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.046 away. White text reads best on it, at 10.86:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #513637 |
| RGB | rgb(81, 54, 55) |
| HSL | hsl(358, 20%, 26%) |
| OKLCH | oklch(36.5% 0.039 16.7) |
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 #513637 | 10.86:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #513637 | 1.93:1 | Fails | Lc 8.8 | Not readable |
| #513637 text on white | 10.86:1 | AAA | Lc 95.1 | Preferred for body text |
| #513637 text on black | 1.93:1 | Fails | Lc -7.5 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#EFE8E8
oklch(93.6% 0.008 17.3)
-
Step 200
200
#E4D5D5
oklch(88.5% 0.017 17.5)
-
Step 300
300
#D3B9BA
oklch(80.8% 0.03 15.1)
-
Step 400
400
#BC9596
oklch(70.6% 0.047 16.6)
-
Step 500
500
#AB7B7D
oklch(63.1% 0.06 16.1)
-
Step 600
600
#966466
oklch(55.7% 0.065 16.7)
-
Step 700
700
#7F5354
oklch(49.1% 0.059 17.9)
-
Step 800
800
#684445
oklch(42.8% 0.05 17.5)
-
Step 900
900 (this color)
#513637
oklch(36.5% 0.039 16.7)
-
Step 950
950
#322222
oklch(27.2% 0.025 18.8)
#513637 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) | #3B3A37 | 0.041 |
| Deuteranopia (no green cones) | #413F37 | 0.039 |
| Tritanopia (no blue cones) | #563336 | 0.012 |
| Achromatopsia (no color) | #3D3D3D | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513637
#513637
oklch(36.5% 0.039 16.7)
- #244545
#244545
oklch(36.5% 0.039 195.6)
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 #513637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.046
- Purple Brown #673A3F ΔE 0.048
- Onyx #343A40 ΔE 0.052
- Gunmetal #293241 ΔE 0.076
- Charcoal #264653 ΔE 0.081
- Space Cadet #2B2D42 ΔE 0.083
- Dark Blue Grey #1F3B4D ΔE 0.084
- Dark Grey Blue #29465B ΔE 0.084
Use #513637 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.