#5B288A
Closest named color: Rebecca Purple (#663399). oklch(40.1% 0.156 303.9), rgb(91, 40, 138).
Aa
White text reads best on this color (9.92:1).
About this color
#5B288A is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.156 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.040 away. White text reads best on it, at 9.92:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #5B288A |
| RGB | rgb(91, 40, 138) |
| HSL | hsl(271, 55%, 35%) |
| OKLCH | oklch(40.1% 0.156 303.9) |
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 #5B288A | 9.92:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #5B288A | 2.11:1 | Fails | Lc 11.6 | Not readable |
| #5B288A text on white | 9.92:1 | AAA | Lc 92.4 | Preferred for body text |
| #5B288A text on black | 2.11:1 | Fails | Lc -10.1 | 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
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#EEE5FD
oklch(93.6% 0.033 302.7)
-
Step 200
200
#E2CFFD
oklch(88.5% 0.066 303.9)
-
Step 300
300
#D1AEFE
oklch(81% 0.116 304)
-
Step 400
400
#BA7EFD
oklch(70.7% 0.186 303.8)
-
Step 500
500
#AA54FB
oklch(63.1% 0.238 303.9)
-
Step 600
600
#962CEA
oklch(55.6% 0.259 303.8)
-
Step 700
700
#8119CC
oklch(49.2% 0.242 304)
-
Step 800
800
#681BA5
oklch(42.7% 0.2 303.7)
-
Step 900
900 (this color)
#5B288A
oklch(40.1% 0.156 303.9)
-
Step 950
950
#31154C
oklch(26.9% 0.098 303.9)
#5B288A 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) | #00428D | 0.119 |
| Deuteranopia (no green cones) | #004388 | 0.120 |
| Tritanopia (no blue cones) | #523F56 | 0.113 |
| Achromatopsia (no color) | #434343 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B288A
#5B288A
oklch(40.1% 0.156 303.9)
- #3D5000
#3D5000
oklch(40% 0.099 123.8)
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 #5B288A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.055
- Blueberry #464196 ΔE 0.066
- Indigo #4B0082 ΔE 0.066
- Chrysanthemum #560BAD ΔE 0.067
- Imperial Purple #480CA8 ΔE 0.075
- Royal Purple #4B006E ΔE 0.083
- Purple #800080 ΔE 0.085
Use #5B288A 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.