#513640
Closest named color: Purple Brown (#673A3F). oklch(36.8% 0.041 355.4), rgb(81, 54, 64).
Aa
White text reads best on this color (10.76:1).
About this color
#513640 is a dark, muted red. In OKLCH its lightness is 37%, its chroma 0.041 and its hue 355°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.046 away. White text reads best on it, at 10.76:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | muted (0.041) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.95:1 |
| White text | 10.76:1 |
Values
| HEX | #513640 |
| RGB | rgb(81, 54, 64) |
| HSL | hsl(338, 20%, 26%) |
| OKLCH | oklch(36.8% 0.041 355.4) |
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 #513640 | 10.76:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #513640 | 1.95:1 | Fails | Lc 9.0 | Not readable |
| #513640 text on white | 10.76:1 | AAA | Lc 94.9 | Preferred for body text |
| #513640 text on black | 1.95:1 | Fails | Lc -7.7 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#EFE7EA
oklch(93.5% 0.01 352.4)
-
Step 200
200
#E3D5D9
oklch(88.5% 0.016 358.1)
-
Step 300
300
#D2B9C1
oklch(80.9% 0.03 356.5)
-
Step 400
400
#BB94A2
oklch(70.7% 0.05 355)
-
Step 500
500
#A97A8B
oklch(63.1% 0.063 355.6)
-
Step 600
600
#946275
oklch(55.5% 0.07 355.2)
-
Step 700
700
#7E5162
oklch(49% 0.065 355.5)
-
Step 800
800
#674350
oklch(42.8% 0.053 356.3)
-
Step 900
900 (this color)
#513640
oklch(36.8% 0.041 355.4)
-
Step 950
950
#312127
oklch(27% 0.027 354.7)
#513640 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) | #393B40 | 0.045 |
| Deuteranopia (no green cones) | #3F3F3F | 0.041 |
| Tritanopia (no blue cones) | #553539 | 0.013 |
| Achromatopsia (no color) | #3E3E3E | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513640
#513640
oklch(36.8% 0.041 355.4)
- #26463E
#26463E
oklch(36.7% 0.041 176.1)
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 #513640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.047
- Onyx #343A40 ΔE 0.052
- Gunmetal #293241 ΔE 0.074
- Charcoal #264653 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.078
- Space Cadet #2B2D42 ΔE 0.080
- Dark Blue Grey #1F3B4D ΔE 0.080
Use #513640 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.