#5B5CA9
Closest named color: Dusky Blue (#475F94). oklch(51.1% 0.12 280.7), rgb(91, 92, 169).
Aa
White text reads best on this color (5.91:1).
About this color
#5B5CA9 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.120 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.046 away. White text reads best on it, at 5.91:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.54:1 |
| White text | 5.91:1 |
Values
| HEX | #5B5CA9 |
| RGB | rgb(91, 92, 169) |
| HSL | hsl(239, 31%, 51%) |
| OKLCH | oklch(51.1% 0.12 280.7) |
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 #5B5CA9 | 5.91:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #5B5CA9 | 3.54:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #5B5CA9 text on white | 5.91:1 | AA | Lc 79.5 | Fine for body text |
| #5B5CA9 text on black | 3.54:1 | AA large text | Lc -22.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D5D7EF
oklch(88.5% 0.033 281.9)
-
Step 300
300
#B9BDE6
oklch(80.9% 0.058 280.6)
-
Step 400
400
#969ADA
oklch(70.7% 0.093 281)
-
Step 500
500
#7D80CF
oklch(63.1% 0.118 280.8)
-
Step 600
600
#6768BC
oklch(55.6% 0.128 280.9)
-
Step 700
700 (this color)
#5B5CA9
oklch(51.1% 0.12 280.7)
-
Step 800
800
#464784
oklch(42.8% 0.099 280.6)
-
Step 900
900
#3A3C6A
oklch(37.7% 0.078 280.1)
-
Step 950
950
#22233E
oklch(26.9% 0.05 280.9)
#5B5CA9 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) | #3D67AC | 0.044 |
| Deuteranopia (no green cones) | #3861A7 | 0.044 |
| Tritanopia (no blue cones) | #416C7A | 0.104 |
| Achromatopsia (no color) | #646464 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B5CA9
#5B5CA9
oklch(51.1% 0.12 280.7)
- #746700
#746700
oklch(51% 0.106 100.7)
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 #5B5CA9, closest first.
No curated palette has a color within ΔE 0.04 of #5B5CA9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.046
- Iris #6258C4 ΔE 0.046
- French Blue #436BAD ΔE 0.047
- Twilight #4E518B ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.058
- Mid Blue #276AB3 ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.065
Use #5B5CA9 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.