#513B31
Closest named color: Charcoal Grey (#3C4142). oklch(37.4% 0.035 45.5), rgb(81, 59, 49).
Aa
White text reads best on this color (10.39:1).
About this color
#513B31 is a dark, muted brown. In OKLCH its lightness is 37%, its chroma 0.035 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.042 away. White text reads best on it, at 10.39:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.01:1 |
| White text | 10.39:1 |
Values
| HEX | #513B31 |
| RGB | rgb(81, 59, 49) |
| HSL | hsl(19, 25%, 25%) |
| OKLCH | oklch(37.4% 0.035 45.5) |
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 #513B31 | 10.39:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #513B31 | 2.01:1 | Fails | Lc 9.8 | Not readable |
| #513B31 text on white | 10.39:1 | AAA | Lc 94.1 | Preferred for body text |
| #513B31 text on black | 2.01:1 | Fails | Lc -8.5 | 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
#F8F5F3
oklch(97.2% 0.004 56.4)
-
Step 100
100
#EFE8E6
oklch(93.6% 0.008 36.6)
-
Step 200
200
#E2D6D1
oklch(88.4% 0.015 44.2)
-
Step 300
300
#D0BCB3
oklch(81% 0.026 45.8)
-
Step 400
400
#B8998B
oklch(70.7% 0.042 45.7)
-
Step 500
500
#A6806E
oklch(63.2% 0.054 46.6)
-
Step 600
600
#916956
oklch(55.7% 0.059 46.4)
-
Step 700
700
#7B5746
oklch(49.1% 0.055 46.3)
-
Step 800
800
#64473A
oklch(42.6% 0.045 45.1)
-
Step 900
900 (this color)
#513B31
oklch(37.4% 0.035 45.5)
-
Step 950
950
#30231D
oklch(27% 0.023 46)
#513B31 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) | #413D30 | 0.030 |
| Deuteranopia (no green cones) | #464231 | 0.028 |
| Tritanopia (no blue cones) | #573738 | 0.022 |
| Achromatopsia (no color) | #404040 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513B31
#513B31
oklch(37.4% 0.035 45.5)
- #2C454F
#2C454F
oklch(37.4% 0.035 225.1)
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 #513B31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.042
- Purple Brown #673A3F ΔE 0.050
- Onyx #343A40 ΔE 0.056
- Mud Brown #60460F ΔE 0.065
- Dark Slate Gray #2F4F4F ΔE 0.077
- Charcoal #264653 ΔE 0.079
- Dark Olive #373E02 ΔE 0.080
- Chestnut #742802 ΔE 0.081
Use #513B31 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.