#511537
Closest named color: Burgundy (#610023). oklch(30.8% 0.097 349.4), rgb(81, 21, 55).
Aa
White text reads best on this color (13.88:1).
About this color
#511537 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.097 and its hue 349°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.049 away. White text reads best on it, at 13.88:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.097) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.51:1 |
| White text | 13.88:1 |
Values
| HEX | #511537 |
| RGB | rgb(81, 21, 55) |
| HSL | hsl(326, 59%, 20%) |
| OKLCH | oklch(30.8% 0.097 349.4) |
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 #511537 | 13.88:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #511537 | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #511537 text on white | 13.88:1 | AAA | Lc 99.9 | Preferred for body text |
| #511537 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
#FEF1F7
oklch(97% 0.016 347.6)
-
Step 100
100
#FCE1ED
oklch(93.5% 0.033 349.1)
-
Step 200
200
#FBC9DF
oklch(88.6% 0.063 350.2)
-
Step 300
300
#F9A1CC
oklch(80.9% 0.116 349.3)
-
Step 400
400
#F168B2
oklch(70.7% 0.185 349.3)
-
Step 500
500
#E72F9F
oklch(63.1% 0.236 349.2)
-
Step 600
600
#CB0087
oklch(55.6% 0.232 349.5)
-
Step 700
700
#AC0072
oklch(49.1% 0.205 349.4)
-
Step 800
800
#8E005D
oklch(42.7% 0.178 349.6)
-
Step 900
900
#76054E
oklch(37.6% 0.153 349)
-
Step 950
950 (this color)
#511537
oklch(30.8% 0.097 349.4)
#511537 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) | #1D2638 | 0.108 |
| Deuteranopia (no green cones) | #2F3036 | 0.095 |
| Tritanopia (no blue cones) | #571223 | 0.037 |
| Achromatopsia (no color) | #2C2C2C | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511537
#511537
oklch(30.8% 0.097 349.4)
- #00392B
#00392B
oklch(30.7% 0.06 170.5)
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 #511537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.049
- Deep Violet #490648 ΔE 0.051
- Grape Purple #5D1451 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.054
- Plum Purple #4E0550 ΔE 0.057
- Aubergine #3D0734 ΔE 0.059
- Dark Plum #3F012C ΔE 0.062
- Eggplant #380835 ΔE 0.069
Use #511537 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.