#521D05
Closest named color: Chocolate Brown (#411900). oklch(30.8% 0.086 41.9), rgb(82, 29, 5).
Aa
White text reads best on this color (13.66:1).
About this color
#521D05 is a dark, moderately saturated brown. In OKLCH its lightness is 31%, its chroma 0.086 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.042 away. White text reads best on it, at 13.66:1.
| Hue family | Browns |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.53:1 |
| White text | 13.66:1 |
Values
| HEX | #521D05 |
| RGB | rgb(82, 29, 5) |
| HSL | hsl(19, 89%, 17%) |
| OKLCH | oklch(30.8% 0.086 41.9) |
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 #521D05 | 13.66:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #521D05 | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #521D05 text on white | 13.66:1 | AAA | Lc 99.7 | Preferred for body text |
| #521D05 text on black | 1.53:1 | 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
#FEF3EE
oklch(97.1% 0.014 46.2)
-
Step 100
100
#FCE4DB
oklch(93.6% 0.029 41.7)
-
Step 200
200
#FBCEBC
oklch(88.6% 0.057 42.9)
-
Step 300
300
#F9AB8C
oklch(80.9% 0.102 42.5)
-
Step 400
400
#F27946
oklch(70.7% 0.163 42.3)
-
Step 500
500
#E35500
oklch(63.1% 0.191 41.8)
-
Step 600
600
#C04700
oklch(55.7% 0.168 42)
-
Step 700
700
#A23A00
oklch(49% 0.149 41.7)
-
Step 800
800
#862F00
oklch(42.8% 0.129 42)
-
Step 900
900
#702600
oklch(37.6% 0.113 42)
-
Step 950
950 (this color)
#521D05
oklch(30.8% 0.086 41.9)
#521D05 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) | #2C2602 | 0.084 |
| Deuteranopia (no green cones) | #393203 | 0.076 |
| Tritanopia (no blue cones) | #5B1018 | 0.041 |
| Achromatopsia (no color) | #2E2E2E | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #521D05
#521D05
oklch(30.8% 0.086 41.9)
- #003644
#003644
oklch(30.8% 0.057 221.3)
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 #521D05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.042
- Mahogany #4A0100 ΔE 0.057
- Reddy Brown #6E1005 ΔE 0.062
- Claret #680018 ΔE 0.065
- Dark Brown #341C02 ΔE 0.069
- Burgundy #610023 ΔE 0.071
- Deep Brown #410200 ΔE 0.073
- Blood #770001 ΔE 0.082
Use #521D05 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.