#57288D
Closest named color: Rebecca Purple (#663399). oklch(39.8% 0.158 300.6), rgb(87, 40, 141).
Aa
White text reads best on this color (10.03:1).
About this color
#57288D is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.158 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.043 away. White text reads best on it, at 10.03:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.09:1 |
| White text | 10.03:1 |
Values
| HEX | #57288D |
| RGB | rgb(87, 40, 141) |
| HSL | hsl(268, 56%, 35%) |
| OKLCH | oklch(39.8% 0.158 300.6) |
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 #57288D | 10.03:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #57288D | 2.09:1 | Fails | Lc 11.3 | Not readable |
| #57288D text on white | 10.03:1 | AAA | Lc 92.6 | Preferred for body text |
| #57288D text on black | 2.09:1 | Fails | Lc -9.8 | 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
#F7F3FF
oklch(97.1% 0.016 301.2)
-
Step 100
100
#EDE5FE
oklch(93.6% 0.035 300.3)
-
Step 200
200
#E0D0FF
oklch(88.6% 0.066 300.6)
-
Step 300
300
#CCB0FF
oklch(80.9% 0.113 300.2)
-
Step 400
400
#B481FF
oklch(70.7% 0.182 300.5)
-
Step 500
500
#A458FF
oklch(63.2% 0.236 300.6)
-
Step 600
600
#912DF1
oklch(55.6% 0.264 300.6)
-
Step 700
700
#7C1AD2
oklch(49.2% 0.245 300.7)
-
Step 800
800
#641CAA
oklch(42.7% 0.203 300.3)
-
Step 900
900 (this color)
#57288D
oklch(39.8% 0.158 300.6)
-
Step 950
950
#2F154F
oklch(26.9% 0.101 300.2)
#57288D 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) | #004290 | 0.112 |
| Deuteranopia (no green cones) | #00418B | 0.112 |
| Tritanopia (no blue cones) | #4B4057 | 0.118 |
| Achromatopsia (no color) | #424242 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57288D
#57288D
oklch(39.8% 0.158 300.6)
- #404E00
#404E00
oklch(39.7% 0.095 120.7)
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 #57288D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.051
- Chrysanthemum #560BAD ΔE 0.061
- Blueberry #464196 ΔE 0.061
- Indigo #4B0082 ΔE 0.063
- Imperial Purple #480CA8 ΔE 0.066
- Royal Purple #4B006E ΔE 0.083
- Grape #7209B7 ΔE 0.086
Use #57288D 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.