#521509
Closest named color: Mahogany (#4A0100). oklch(29.7% 0.093 33.1), rgb(82, 21, 9).
Aa
White text reads best on this color (14.28:1).
About this color
#521509 is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.093 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.041 away. White text reads best on it, at 14.28:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.093) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.46:1 |
| White text | 14.28:1 |
Values
| HEX | #521509 |
| RGB | rgb(82, 21, 9) |
| HSL | hsl(10, 80%, 18%) |
| OKLCH | oklch(29.7% 0.093 33.1) |
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 #521509 | 14.28:1 | AAA | Lc -103.4 | Preferred for body text |
| Black text on #521509 | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #521509 text on white | 14.28:1 | AAA | Lc 100.3 | Preferred for body text |
| #521509 text on black | 1.46:1 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DC
oklch(93.6% 0.031 34.9)
-
Step 200
200
#FFCBBF
oklch(88.5% 0.062 33.2)
-
Step 300
300
#FFA693
oklch(80.9% 0.11 32.7)
-
Step 400
400
#FB6F53
oklch(70.7% 0.177 33)
-
Step 500
500
#F33A0F
oklch(63.1% 0.225 33.1)
-
Step 600
600
#D02B00
oklch(55.7% 0.205 33.2)
-
Step 700
700
#B02200
oklch(49.1% 0.181 33)
-
Step 800
800
#911B00
oklch(42.6% 0.157 33.2)
-
Step 900
900
#7A1500
oklch(37.6% 0.138 33.2)
-
Step 950
950 (this color)
#521509
oklch(29.7% 0.093 33.1)
#521509 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) | #272207 | 0.097 |
| Deuteranopia (no green cones) | #362F06 | 0.088 |
| Tritanopia (no blue cones) | #5B0313 | 0.034 |
| Achromatopsia (no color) | #2A2A2A | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #521509
#521509
oklch(29.7% 0.093 33.1)
- #00343D
#00343D
oklch(29.9% 0.052 213)
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 #521509, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.041
- Chocolate Brown #411900 ΔE 0.042
- Claret #680018 ΔE 0.056
- Burgundy #610023 ΔE 0.058
- Deep Brown #410200 ΔE 0.059
- Reddy Brown #6E1005 ΔE 0.063
- Dark Brown #341C02 ΔE 0.070
- Dark Maroon #3C0008 ΔE 0.075
Use #521509 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.