#521821
Closest named color: Burgundy (#610023). oklch(30.5% 0.086 14.7), rgb(82, 24, 33).
Aa
White text reads best on this color (13.89:1).
About this color
#521821 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.086 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.042 away. White text reads best on it, at 13.89:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.51:1 |
| White text | 13.89:1 |
Values
| HEX | #521821 |
| RGB | rgb(82, 24, 33) |
| HSL | hsl(351, 55%, 21%) |
| OKLCH | oklch(30.5% 0.086 14.7) |
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 #521821 | 13.89:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #521821 | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #521821 text on white | 13.89:1 | AAA | Lc 99.9 | Preferred for body text |
| #521821 text on black | 1.51:1 | 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
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FDE2E4
oklch(93.5% 0.03 12.6)
-
Step 200
200
#FDCBCD
oklch(88.6% 0.057 15.6)
-
Step 300
300
#FBA5AC
oklch(80.8% 0.102 14.3)
-
Step 400
400
#F56F80
oklch(70.7% 0.165 14.5)
-
Step 500
500
#EC3E60
oklch(63.1% 0.209 14.8)
-
Step 600
600
#D50048
oklch(55.5% 0.222 14.6)
-
Step 700
700
#B5003C
oklch(49.2% 0.197 14.6)
-
Step 800
800
#960030
oklch(42.8% 0.171 14.7)
-
Step 900
900
#79112A
oklch(37.7% 0.136 14.4)
-
Step 950
950 (this color)
#521821
oklch(30.5% 0.086 14.7)
#521821 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) | #262521 | 0.095 |
| Deuteranopia (no green cones) | #353120 | 0.087 |
| Tritanopia (no blue cones) | #5A0D1C | 0.022 |
| Achromatopsia (no color) | #2C2C2C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #521821
#521821
oklch(30.5% 0.086 14.7)
- #003737
#003737
oklch(30.5% 0.052 194.8)
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 #521821, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.042
- Claret #680018 ΔE 0.051
- Mahogany #4A0100 ΔE 0.057
- Chocolate Brown #411900 ΔE 0.061
- Reddy Brown #6E1005 ΔE 0.067
- Deep Brown #410200 ΔE 0.072
- Dark Plum #3F012C ΔE 0.078
- Dark Maroon #3C0008 ΔE 0.081
Use #521821 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.