#51210D
Closest named color: Chocolate Brown (#411900). oklch(31.4% 0.078 41.6), rgb(81, 33, 13).
Aa
White text reads best on this color (13.34:1).
About this color
#51210D is a dark, moderately saturated brown. In OKLCH its lightness is 31%, its chroma 0.078 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.046 away. White text reads best on it, at 13.34:1.
| Hue family | Browns |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.57:1 |
| White text | 13.34:1 |
Values
| HEX | #51210D |
| RGB | rgb(81, 33, 13) |
| HSL | hsl(18, 72%, 18%) |
| OKLCH | oklch(31.4% 0.078 41.6) |
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 #51210D | 13.34:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #51210D | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #51210D text on white | 13.34:1 | AAA | Lc 99.3 | Preferred for body text |
| #51210D text on black | 1.57:1 | 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 950.
-
Step 50
50
#FDF3EF
oklch(97.1% 0.012 43.3)
-
Step 100
100
#FBE5DC
oklch(93.7% 0.027 43.7)
-
Step 200
200
#F8CFBF
oklch(88.5% 0.051 42.4)
-
Step 300
300
#F5AD92
oklch(81% 0.093 41.4)
-
Step 400
400
#EC7D52
oklch(70.7% 0.149 41.3)
-
Step 500
500
#E35506
oklch(63.1% 0.19 41.4)
-
Step 600
600
#C04600
oklch(55.6% 0.169 41.6)
-
Step 700
700
#A23A00
oklch(49% 0.149 41.7)
-
Step 800
800
#862E00
oklch(42.6% 0.13 41.4)
-
Step 900
900
#712600
oklch(37.8% 0.115 41.7)
-
Step 950
950 (this color)
#51210D
oklch(31.4% 0.078 41.6)
#51210D 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) | #2E290A | 0.076 |
| Deuteranopia (no green cones) | #3A330C | 0.068 |
| Tritanopia (no blue cones) | #5A171D | 0.039 |
| Achromatopsia (no color) | #2F2F2F | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51210D
#51210D
oklch(31.4% 0.078 41.6)
- #003846
#003846
oklch(31.5% 0.058 220.6)
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 #51210D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.046
- Reddy Brown #6E1005 ΔE 0.064
- Mahogany #4A0100 ΔE 0.065
- Claret #680018 ΔE 0.068
- Dark Brown #341C02 ΔE 0.070
- Burgundy #610023 ΔE 0.073
- Deep Brown #410200 ΔE 0.079
- Chestnut #742802 ΔE 0.081
Use #51210D 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.