#5B258C
Closest named color: Rebecca Purple (#663399). oklch(39.9% 0.162 303.7), rgb(91, 37, 140).
Aa
White text reads best on this color (10.05:1).
About this color
#5B258C is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.162 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 0.042 away. White text reads best on it, at 10.05:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #5B258C |
| RGB | rgb(91, 37, 140) |
| HSL | hsl(271, 58%, 35%) |
| OKLCH | oklch(39.9% 0.162 303.7) |
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 #5B258C | 10.05:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #5B258C | 2.08:1 | Fails | Lc 11.4 | Not readable |
| #5B258C text on white | 10.05:1 | AAA | Lc 92.6 | Preferred for body text |
| #5B258C text on black | 2.08:1 | Fails | Lc -9.9 | 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
#F8F3FF
oklch(97.1% 0.017 304.8)
-
Step 100
100
#EFE5FE
oklch(93.7% 0.035 303.8)
-
Step 200
200
#E2CFFE
oklch(88.5% 0.067 303.4)
-
Step 300
300
#D1ADFF
oklch(80.8% 0.119 304)
-
Step 400
400
#BA7DFF
oklch(70.6% 0.189 303.6)
-
Step 500
500
#AB51FF
oklch(63.1% 0.246 303.7)
-
Step 600
600
#9823EF
oklch(55.6% 0.27 303.9)
-
Step 700
700
#820DD0
oklch(49.2% 0.251 303.9)
-
Step 800
800
#6915A8
oklch(42.7% 0.207 303.7)
-
Step 900
900 (this color)
#5B258C
oklch(39.9% 0.162 303.7)
-
Step 950
950
#32144E
oklch(27.1% 0.102 304)
#5B258C 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) | #00418F | 0.121 |
| Deuteranopia (no green cones) | #00428A | 0.122 |
| Tritanopia (no blue cones) | #513E56 | 0.118 |
| Achromatopsia (no color) | #424242 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B258C
#5B258C
oklch(39.9% 0.162 303.7)
- #3D4F00
#3D4F00
oklch(39.8% 0.098 123.3)
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 #5B258C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.059
- Chrysanthemum #560BAD ΔE 0.062
- Indigo #4B0082 ΔE 0.062
- Blueberry #464196 ΔE 0.069
- Imperial Purple #480CA8 ΔE 0.070
- Royal Purple #4B006E ΔE 0.081
- Grape #7209B7 ΔE 0.082
Use #5B258C 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.