#521803
Closest named color: Chocolate Brown (#411900). oklch(30% 0.092 38.9), rgb(82, 24, 3).
Aa
White text reads best on this color (14.08:1).
About this color
#521803 is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.092 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.040 away. White text reads best on it, at 14.08:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.49:1 |
| White text | 14.08:1 |
Values
| HEX | #521803 |
| RGB | rgb(82, 24, 3) |
| HSL | hsl(16, 93%, 17%) |
| OKLCH | oklch(30% 0.092 38.9) |
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 #521803 | 14.08:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #521803 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #521803 text on white | 14.08:1 | AAA | Lc 100.1 | Preferred for body text |
| #521803 text on black | 1.49:1 | 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
#FFF2EE
oklch(97% 0.015 37.9)
-
Step 100
100
#FEE3DB
oklch(93.6% 0.032 37.1)
-
Step 200
200
#FECCBC
oklch(88.5% 0.061 38.5)
-
Step 300
300
#FDA88C
oklch(80.8% 0.108 39)
-
Step 400
400
#F87346
oklch(70.7% 0.174 38.9)
-
Step 500
500
#E94D00
oklch(63.1% 0.203 38.8)
-
Step 600
600
#C54000
oklch(55.7% 0.179 38.9)
-
Step 700
700
#A63500
oklch(49.1% 0.157 39.1)
-
Step 800
800
#892A00
oklch(42.6% 0.137 39)
-
Step 900
900
#742200
oklch(37.8% 0.121 38.9)
-
Step 950
950 (this color)
#521803
oklch(30% 0.092 38.9)
#521803 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) | #292301 | 0.092 |
| Deuteranopia (no green cones) | #373001 | 0.083 |
| Tritanopia (no blue cones) | #5B0714 | 0.040 |
| Achromatopsia (no color) | #2B2B2B | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #521803
#521803
oklch(30% 0.092 38.9)
- #003440
#003440
oklch(30% 0.054 218.5)
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 #521803, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.040
- Mahogany #4A0100 ΔE 0.047
- Claret #680018 ΔE 0.061
- Reddy Brown #6E1005 ΔE 0.062
- Deep Brown #410200 ΔE 0.064
- Burgundy #610023 ΔE 0.066
- Dark Brown #341C02 ΔE 0.068
- Dark Maroon #3C0008 ΔE 0.081
Use #521803 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.