#51320D
Closest named color: Dark Olive (#373E02). oklch(34.8% 0.067 66.4), rgb(81, 50, 13).
Aa
White text reads best on this color (11.58:1).
About this color
#51320D is a dark, muted brown. In OKLCH its lightness is 35%, its chroma 0.067 and its hue 66°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.062 away. White text reads best on it, at 11.58:1.
| Hue family | Browns |
| Lightness | dark (35%) |
| Chroma | muted (0.067) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.81:1 |
| White text | 11.58:1 |
Values
| HEX | #51320D |
| RGB | rgb(81, 50, 13) |
| HSL | hsl(33, 72%, 18%) |
| OKLCH | oklch(34.8% 0.067 66.4) |
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 #51320D | 11.58:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #51320D | 1.81:1 | Fails | Lc 7.4 | Not readable |
| #51320D text on white | 11.58:1 | AAA | Lc 96.5 | Preferred for body text |
| #51320D text on black | 1.81:1 | Fails | Lc 0.0 | 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
#F9F5F1
oklch(97.2% 0.007 67.7)
-
Step 100
100
#F1E8E0
oklch(93.6% 0.015 64.3)
-
Step 200
200
#E6D6C6
oklch(88.5% 0.028 67.5)
-
Step 300
300
#D7BB9F
oklch(80.9% 0.05 67)
-
Step 400
400
#C3976A
oklch(70.7% 0.08 66.6)
-
Step 500
500
#B37C40
oklch(63% 0.103 66.4)
-
Step 600
600
#9F641C
oklch(55.6% 0.112 65.9)
-
Step 700
700
#87530D
oklch(49% 0.103 66.7)
-
Step 800
800
#6E4410
oklch(42.6% 0.086 66.3)
-
Step 900
900 (this color)
#51320D
oklch(34.8% 0.067 66.4)
-
Step 950
950
#34220E
oklch(26.9% 0.042 67.2)
#51320D 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) | #3C3408 | 0.043 |
| Deuteranopia (no green cones) | #433C0E | 0.039 |
| Tritanopia (no blue cones) | #592B2B | 0.052 |
| Achromatopsia (no color) | #393939 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51320D
#51320D
oklch(34.8% 0.067 66.4)
- #183D5B
#183D5B
oklch(34.9% 0.067 245.9)
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 #51320D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.062
- Mud Brown #60460F ΔE 0.068
- Chestnut #742802 ΔE 0.073
- Pakistan Green #283618 ΔE 0.073
- Charcoal Grey #3C4142 ΔE 0.076
- Onyx #343A40 ΔE 0.080
- Chocolate Brown #411900 ΔE 0.081
- Purple Brown #673A3F ΔE 0.082
Use #51320D 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.