#57257C
Closest named color: Indigo (#4B0082). oklch(38.1% 0.143 307.2), rgb(87, 37, 124).
Aa
White text reads best on this color (10.70:1).
About this color
#57257C is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.143 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.058 away. White text reads best on it, at 10.70:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.96:1 |
| White text | 10.70:1 |
Values
| HEX | #57257C |
| RGB | rgb(87, 37, 124) |
| HSL | hsl(274, 54%, 32%) |
| OKLCH | oklch(38.1% 0.143 307.2) |
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 #57257C | 10.70:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #57257C | 1.96:1 | Fails | Lc 9.7 | Not readable |
| #57257C text on white | 10.70:1 | AAA | Lc 94.2 | Preferred for body text |
| #57257C text on black | 1.96:1 | Fails | Lc -8.4 | 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
#E3CFF8
oklch(88.4% 0.059 307.2)
-
Step 300
300
#D3AEF7
oklch(80.9% 0.108 307.3)
-
Step 400
400
#BD80F3
oklch(70.8% 0.172 307)
-
Step 500
500
#AD59EE
oklch(63.1% 0.219 307.2)
-
Step 600
600
#9936DC
oklch(55.7% 0.238 307.3)
-
Step 700
700
#8325BF
oklch(49.2% 0.222 307.4)
-
Step 800
800
#6A229A
oklch(42.6% 0.183 307.4)
-
Step 900
900 (this color)
#57257C
oklch(38.1% 0.143 307.2)
-
Step 950
950
#321748
oklch(27% 0.09 306.8)
#57257C 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 | 0.118 |
| Deuteranopia (no green cones) | #103E7A | 0.112 |
| Tritanopia (no blue cones) | #51384D | 0.101 |
| Achromatopsia (no color) | #3E3E3E | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57257C
#57257C
oklch(38.1% 0.143 307.2)
- #344B00
#344B00
oklch(37.9% 0.098 127)
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 #57257C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.062
- Rebecca Purple #663399 ΔE 0.063
- Royal Purple #4B006E ΔE 0.065
- Blueberry #464196 ΔE 0.078
- Grape Purple #5D1451 ΔE 0.078
- Chrysanthemum #560BAD ΔE 0.085
- Imperial Purple #480CA8 ΔE 0.087
Use #57257C 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.