#51401B
Closest named color: Mud Brown (#60460F). oklch(38.1% 0.058 84.6), rgb(81, 64, 27).
Aa
White text reads best on this color (10.00:1).
About this color
#51401B is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.058 and its hue 85°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.037 away. White text reads best on it, at 10.00:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.058) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #51401B |
| RGB | rgb(81, 64, 27) |
| HSL | hsl(41, 50%, 21%) |
| OKLCH | oklch(38.1% 0.058 84.6) |
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 #51401B | 10.00:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #51401B | 2.09:1 | Fails | Lc 10.8 | Not readable |
| #51401B text on white | 10.00:1 | AAA | Lc 93.1 | Preferred for body text |
| #51401B text on black | 2.09:1 | Fails | Lc -9.3 | 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EEE9E1
oklch(93.6% 0.012 79.8)
-
Step 200
200
#E1D8C8
oklch(88.5% 0.024 82.1)
-
Step 300
300
#CEBFA1
oklch(80.9% 0.044 84.5)
-
Step 400
400
#B59E6E
oklch(70.8% 0.07 85.1)
-
Step 500
500
#A28546
oklch(63% 0.089 85)
-
Step 600
600
#8E6E26
oklch(55.6% 0.097 84.1)
-
Step 700
700
#785C18
oklch(49.1% 0.09 85)
-
Step 800
800
#624B17
oklch(42.7% 0.075 84.2)
-
Step 900
900 (this color)
#51401B
oklch(38.1% 0.058 84.6)
-
Step 950
950
#2F2510
oklch(27% 0.037 84.4)
#51401B 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) | #484017 | 0.018 |
| Deuteranopia (no green cones) | #4C441C | 0.014 |
| Tritanopia (no blue cones) | #583A38 | 0.053 |
| Achromatopsia (no color) | #424242 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51401B
#51401B
oklch(38.1% 0.058 84.6)
- #334262
#334262
oklch(38.1% 0.058 264.6)
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 #51401B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.037
- Green Brown #544E03 ΔE 0.052
- Dark Olive #373E02 ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.063
- Purple Brown #673A3F ΔE 0.075
- Olive Brown #645403 ΔE 0.076
- Navy Green #35530A ΔE 0.078
- Onyx #343A40 ΔE 0.080
Use #51401B 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.