#57247C
Closest named color: Indigo (#4B0082). oklch(38% 0.144 307.4), rgb(87, 36, 124).
Aa
White text reads best on this color (10.77:1).
About this color
#57247C is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.144 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.056 away. White text reads best on it, at 10.77:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.94:1 |
| White text | 10.77:1 |
Values
| HEX | #57247C |
| RGB | rgb(87, 36, 124) |
| HSL | hsl(275, 55%, 31%) |
| OKLCH | oklch(38% 0.144 307.4) |
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 #57247C | 10.77:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #57247C | 1.94:1 | Fails | Lc 9.6 | Not readable |
| #57247C text on white | 10.77:1 | AAA | Lc 94.3 | Preferred for body text |
| #57247C text on black | 1.94:1 | Fails | Lc -8.3 | 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 900.
-
Step 50
50
#F8F3FD
oklch(97.1% 0.014 308.3)
-
Step 100
100
#EFE5FB
oklch(93.6% 0.031 306.2)
-
Step 200
200
#E4CFF9
oklch(88.5% 0.061 307.7)
-
Step 300
300
#D3AEF7
oklch(80.9% 0.108 307.3)
-
Step 400
400
#BE7FF3
oklch(70.7% 0.173 307.6)
-
Step 500
500
#AE58EE
oklch(63.1% 0.221 307.6)
-
Step 600
600
#9934DD
oklch(55.5% 0.241 307.2)
-
Step 700
700
#8324C0
oklch(49.2% 0.224 307.2)
-
Step 800
800
#6A219B
oklch(42.6% 0.185 307.2)
-
Step 900
900 (this color)
#57247C
oklch(38% 0.144 307.4)
-
Step 950
950
#321648
oklch(26.9% 0.091 307.1)
#57247C 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) | #003C7F | 0.119 |
| Deuteranopia (no green cones) | #0E3E7A | 0.115 |
| Tritanopia (no blue cones) | #51374D | 0.101 |
| Achromatopsia (no color) | #3E3E3E | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57247C
#57247C
oklch(38% 0.144 307.4)
- #334B00
#334B00
oklch(37.9% 0.098 127.6)
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 #57247C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.056
- Royal Purple #4B006E ΔE 0.063
- Rebecca Purple #663399 ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.064
- Grape Purple #5D1451 ΔE 0.078
- Blueberry #464196 ΔE 0.080
- Chrysanthemum #560BAD ΔE 0.085
- Imperial Purple #480CA8 ΔE 0.087
Use #57247C 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.