#5B4099
Closest named color: Rebecca Purple (#663399). oklch(44.8% 0.14 294), rgb(91, 64, 153).
Aa
White text reads best on this color (7.96:1).
About this color
#5B4099 is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.140 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.033 away. White text reads best on it, at 7.96:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.63:1 |
| White text | 7.96:1 |
Values
| HEX | #5B4099 |
| RGB | rgb(91, 64, 153) |
| HSL | hsl(258, 41%, 43%) |
| OKLCH | oklch(44.8% 0.14 294) |
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 #5B4099 | 7.96:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #5B4099 | 2.63:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #5B4099 text on white | 7.96:1 | AAA | Lc 87.3 | Fine for body text |
| #5B4099 text on black | 2.63:1 | Fails | Lc -14.8 | 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 800.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F5
oklch(88.5% 0.045 293.8)
-
Step 300
300
#C3B7F1
oklch(80.9% 0.082 294)
-
Step 400
400
#A58FEA
oklch(70.6% 0.132 293.9)
-
Step 500
500
#9171E3
oklch(63.2% 0.167 294)
-
Step 600
600
#7C56D1
oklch(55.6% 0.182 293.9)
-
Step 700
700
#6945B5
oklch(49.1% 0.169 294.1)
-
Step 800
800 (this color)
#5B4099
oklch(44.8% 0.14 294)
-
Step 900
900
#463375
oklch(37.8% 0.109 293.8)
-
Step 950
950
#291E44
oklch(26.9% 0.069 294.7)
#5B4099 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) | #0F529C | 0.092 |
| Deuteranopia (no green cones) | #194F97 | 0.087 |
| Tritanopia (no blue cones) | #4B5366 | 0.111 |
| Achromatopsia (no color) | #515151 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B4099
#5B4099
oklch(44.8% 0.14 294)
- #545A00
#545A00
oklch(44.7% 0.101 114.2)
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 #5B4099, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.033
- Blueberry #464196 ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.041
- Twilight #4E518B ΔE 0.055
- Dusk #4E5481 ΔE 0.073
- Bluey Purple #6241C7 ΔE 0.074
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Denim Blue #3B5B92 ΔE 0.083
Use #5B4099 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.