#5B559F
Closest named color: Twilight (#4E518B). oklch(49.1% 0.116 285), rgb(91, 85, 159).
Aa
White text reads best on this color (6.47:1).
About this color
#5B559F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.116 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.039 away. White text reads best on it, at 6.47:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #5B559F |
| RGB | rgb(91, 85, 159) |
| HSL | hsl(245, 30%, 48%) |
| OKLCH | oklch(49.1% 0.116 285) |
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 #5B559F | 6.47:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #5B559F | 3.24:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #5B559F text on white | 6.47:1 | AA | Lc 82.0 | Fine for body text |
| #5B559F text on black | 3.24:1 | AA large text | Lc -19.9 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D6D7EE
oklch(88.5% 0.031 283.8)
-
Step 300
300
#BCBCE4
oklch(80.8% 0.056 285.1)
-
Step 400
400
#9A99D7
oklch(70.7% 0.09 284.6)
-
Step 500
500
#837FCC
oklch(63.2% 0.114 285)
-
Step 600
600
#6D67B9
oklch(55.7% 0.125 284.9)
-
Step 700
700 (this color)
#5B559F
oklch(49.1% 0.116 285)
-
Step 800
800
#4A4681
oklch(42.7% 0.096 284.7)
-
Step 900
900
#3E3B67
oklch(37.7% 0.074 285.4)
-
Step 950
950
#24233D
oklch(27.1% 0.048 284.5)
#5B559F 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) | #3960A2 | 0.049 |
| Deuteranopia (no green cones) | #375C9D | 0.049 |
| Tritanopia (no blue cones) | #476472 | 0.099 |
| Achromatopsia (no color) | #5E5E5E | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B559F
#5B559F
oklch(49.1% 0.116 285)
- #6A6300
#6A6300
oklch(49.1% 0.104 104.8)
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 #5B559F, closest first.
No curated palette has a color within ΔE 0.04 of #5B559F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.039
- Dusky Blue #475F94 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.052
- Dusk #4E5481 ΔE 0.053
- Iris #6258C4 ΔE 0.059
- French Blue #436BAD ΔE 0.063
- Blueberry #464196 ΔE 0.066
- Denim #3B638C ΔE 0.068
Use #5B559F 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.