#5B5DAB
Closest named color: Iris (#6258C4). oklch(51.4% 0.121 280.1), rgb(91, 93, 171).
Aa
White text reads best on this color (5.83:1).
About this color
#5B5DAB is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.121 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.044 away. White text reads best on it, at 5.83:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.59:1 |
| White text | 5.83:1 |
Values
| HEX | #5B5DAB |
| RGB | rgb(91, 93, 171) |
| HSL | hsl(239, 32%, 51%) |
| OKLCH | oklch(51.4% 0.121 280.1) |
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 #5B5DAB | 5.83:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #5B5DAB | 3.59:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #5B5DAB text on white | 5.83:1 | AA | Lc 79.0 | Fine for body text |
| #5B5DAB text on black | 3.59:1 | AA large text | Lc -22.8 | 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
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B9BDE7
oklch(80.9% 0.059 280.7)
-
Step 400
400
#959ADB
oklch(70.7% 0.095 280.3)
-
Step 500
500
#7C80D0
oklch(63.1% 0.119 280.2)
-
Step 600
600
#6668BE
oklch(55.6% 0.131 280.2)
-
Step 700
700 (this color)
#5B5DAB
oklch(51.4% 0.121 280.1)
-
Step 800
800
#454784
oklch(42.7% 0.1 279.9)
-
Step 900
900
#3A3C6A
oklch(37.7% 0.078 280.1)
-
Step 950
950
#22233E
oklch(26.9% 0.05 280.9)
#5B5DAB 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) | #3E68AE | 0.043 |
| Deuteranopia (no green cones) | #3862A9 | 0.044 |
| Tritanopia (no blue cones) | #3F6D7C | 0.105 |
| Achromatopsia (no color) | #656565 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B5DAB
#5B5DAB
oklch(51.4% 0.121 280.1)
- #766800
#766800
oklch(51.5% 0.107 100.1)
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 #5B5DAB, closest first.
No curated palette has a color within ΔE 0.04 of #5B5DAB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.044
- French Blue #436BAD ΔE 0.045
- Dusky Blue #475F94 ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.060
- Twilight #4E518B ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.062
Use #5B5DAB 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.