#57288A
Closest named color: Rebecca Purple (#663399). oklch(39.6% 0.155 301.6), rgb(87, 40, 138).
Aa
White text reads best on this color (10.11:1).
About this color
#57288A is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.155 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.045 away. White text reads best on it, at 10.11:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #57288A |
| RGB | rgb(87, 40, 138) |
| HSL | hsl(269, 55%, 35%) |
| OKLCH | oklch(39.6% 0.155 301.6) |
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 #57288A | 10.11:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #57288A | 2.07:1 | Fails | Lc 11.1 | Not readable |
| #57288A text on white | 10.11:1 | AAA | Lc 92.8 | Preferred for body text |
| #57288A text on black | 2.07:1 | Fails | Lc -9.6 | 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
#EEE5FD
oklch(93.6% 0.033 302.7)
-
Step 200
200
#E0D0FE
oklch(88.5% 0.065 301)
-
Step 300
300
#CEAFFF
oklch(80.9% 0.115 301.7)
-
Step 400
400
#B680FF
oklch(70.7% 0.184 301.5)
-
Step 500
500
#A657FE
oklch(63.2% 0.237 301.6)
-
Step 600
600
#9230ED
oklch(55.6% 0.258 301.6)
-
Step 700
700
#7D1ECE
oklch(49.2% 0.239 301.8)
-
Step 800
800
#651EA7
oklch(42.7% 0.199 301.5)
-
Step 900
900 (this color)
#57288A
oklch(39.6% 0.155 301.6)
-
Step 950
950
#30164D
oklch(27% 0.097 302)
#57288A 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) | #00418D | 0.112 |
| Deuteranopia (no green cones) | #004188 | 0.113 |
| Tritanopia (no blue cones) | #4C3F56 | 0.114 |
| Achromatopsia (no color) | #424242 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57288A
#57288A
oklch(39.6% 0.155 301.6)
- #3F4E00
#3F4E00
oklch(39.7% 0.096 121.4)
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 #57288A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.045
- Dark Slate Blue #483D8B ΔE 0.052
- Indigo #4B0082 ΔE 0.062
- Blueberry #464196 ΔE 0.063
- Chrysanthemum #560BAD ΔE 0.065
- Imperial Purple #480CA8 ΔE 0.070
- Royal Purple #4B006E ΔE 0.080
- Grape #7209B7 ΔE 0.090
Use #57288A 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.