#5A257C
Closest named color: Rebecca Purple (#663399). oklch(38.5% 0.144 309.1), rgb(90, 37, 124).
Aa
White text reads best on this color (10.55:1).
About this color
#5A257C is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.144 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.060 away. White text reads best on it, at 10.55:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 1.99:1 |
| White text | 10.55:1 |
Values
| HEX | #5A257C |
| RGB | rgb(90, 37, 124) |
| HSL | hsl(277, 54%, 32%) |
| OKLCH | oklch(38.5% 0.144 309.1) |
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 #5A257C | 10.55:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #5A257C | 1.99:1 | Fails | Lc 10.1 | Not readable |
| #5A257C text on white | 10.55:1 | AAA | Lc 93.8 | Preferred for body text |
| #5A257C text on black | 1.99:1 | Fails | Lc -8.7 | 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
#F0E5FA
oklch(93.7% 0.03 309.1)
-
Step 200
200
#E5CFF8
oklch(88.5% 0.06 309.2)
-
Step 300
300
#D5ADF6
oklch(80.8% 0.109 309.1)
-
Step 400
400
#C07EF1
oklch(70.6% 0.173 309.1)
-
Step 500
500
#B057EC
oklch(63.1% 0.221 308.9)
-
Step 600
600
#9C33DA
oklch(55.6% 0.24 309)
-
Step 700
700
#8522BD
oklch(49% 0.223 308.9)
-
Step 800
800
#6C2099
oklch(42.6% 0.185 308.9)
-
Step 900
900 (this color)
#5A257C
oklch(38.5% 0.144 309.1)
-
Step 950
950
#331647
oklch(26.9% 0.09 308.8)
#5A257C 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) | #003D7F | 0.123 |
| Deuteranopia (no green cones) | #15407A | 0.115 |
| Tritanopia (no blue cones) | #55384D | 0.101 |
| Achromatopsia (no color) | #3F3F3F | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A257C
#5A257C
oklch(38.5% 0.144 309.1)
- #324D00
#324D00
oklch(38.4% 0.102 128.9)
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 #5A257C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.060
- Indigo #4B0082 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.064
- Royal Purple #4B006E ΔE 0.068
- Grape Purple #5D1451 ΔE 0.077
- Blueberry #464196 ΔE 0.080
- Purple #800080 ΔE 0.083
- Chrysanthemum #560BAD ΔE 0.087
Use #5A257C 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.