#511737
Closest named color: Burgundy (#610023). oklch(31% 0.094 349.9), rgb(81, 23, 55).
Aa
White text reads best on this color (13.74:1).
About this color
#511737 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.094 and its hue 350°. 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 13.74:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.094) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.52:1 |
| White text | 13.74:1 |
Values
| HEX | #511737 |
| RGB | rgb(81, 23, 55) |
| HSL | hsl(327, 56%, 20%) |
| OKLCH | oklch(31% 0.094 349.9) |
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 #511737 | 13.74:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #511737 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #511737 text on white | 13.74:1 | AAA | Lc 99.7 | Preferred for body text |
| #511737 text on black | 1.52:1 | 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
#FEF2F7
oklch(97.2% 0.014 350.1)
-
Step 100
100
#FCE2ED
oklch(93.7% 0.032 350.2)
-
Step 200
200
#FAC9DF
oklch(88.5% 0.062 349.7)
-
Step 300
300
#F7A2CB
oklch(80.8% 0.112 349.5)
-
Step 400
400
#EF6BB0
oklch(70.7% 0.178 350.1)
-
Step 500
500
#E5359D
oklch(63.1% 0.228 349.7)
-
Step 600
600
#CB0086
oklch(55.5% 0.232 349.9)
-
Step 700
700
#AC0071
oklch(49.1% 0.205 349.8)
-
Step 800
800
#8E005C
oklch(42.6% 0.178 350.1)
-
Step 900
900
#750A4D
oklch(37.6% 0.149 349.5)
-
Step 950
950 (this color)
#511737
oklch(31% 0.094 349.9)
#511737 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) | #1F2738 | 0.104 |
| Deuteranopia (no green cones) | #2F3136 | 0.093 |
| Tritanopia (no blue cones) | #571424 | 0.035 |
| Achromatopsia (no color) | #2D2D2D | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511737
#511737
oklch(31% 0.094 349.9)
- #003A2B
#003A2B
oklch(31% 0.062 169.4)
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 #511737, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.049
- Grape Purple #5D1451 ΔE 0.053
- Deep Violet #490648 ΔE 0.053
- Eggplant Purple #430541 ΔE 0.057
- Plum Purple #4E0550 ΔE 0.060
- Aubergine #3D0734 ΔE 0.061
- Dark Plum #3F012C ΔE 0.065
- Claret #680018 ΔE 0.069
Use #511737 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.