#5B56AD
Closest named color: Iris (#6258C4). oklch(50.2% 0.135 283), rgb(91, 86, 173).
Aa
White text reads best on this color (6.21:1).
About this color
#5B56AD is a medium-dark, moderately saturated purple. In OKLCH its lightness is 50%, its chroma 0.135 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.038 away. White text reads best on it, at 6.21:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.37:1 |
| White text | 6.21:1 |
Values
| HEX | #5B56AD |
| RGB | rgb(91, 86, 173) |
| HSL | hsl(243, 35%, 51%) |
| OKLCH | oklch(50.2% 0.135 283) |
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 #5B56AD | 6.21:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #5B56AD | 3.37:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #5B56AD text on white | 6.21:1 | AA | Lc 80.8 | Fine for body text |
| #5B56AD text on black | 3.37:1 | AA large text | Lc -21.1 | 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
#E8E9F6
oklch(93.7% 0.018 282.5)
-
Step 200
200
#D5D7F1
oklch(88.6% 0.036 282.1)
-
Step 300
300
#BABCEA
oklch(80.9% 0.065 282.9)
-
Step 400
400
#9798E0
oklch(70.7% 0.105 282.8)
-
Step 500
500
#7F7DD7
oklch(63.1% 0.133 282.9)
-
Step 600
600
#6964C4
oklch(55.5% 0.145 282.9)
-
Step 700
700 (this color)
#5B56AD
oklch(50.2% 0.135 283)
-
Step 800
800
#484489
oklch(42.7% 0.111 283.2)
-
Step 900
900
#3C3A6E
oklch(37.7% 0.087 283.1)
-
Step 950
950
#232240
oklch(26.9% 0.055 283.6)
#5B56AD 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) | #2F64B0 | 0.059 |
| Deuteranopia (no green cones) | #2A5EAB | 0.059 |
| Tritanopia (no blue cones) | #3F6979 | 0.116 |
| Achromatopsia (no color) | #616161 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B56AD
#5B56AD
oklch(50.2% 0.135 283)
- #6F6600
#6F6600
oklch(50.3% 0.106 103.5)
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 #5B56AD, closest first.
No curated palette has a color within ΔE 0.04 of #5B56AD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.056
- Dusky Blue #475F94 ΔE 0.057
- Twilight #4E518B ΔE 0.059
- French Blue #436BAD ΔE 0.061
- Light Indigo #6D5ACF ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.062
- Bluey Purple #6241C7 ΔE 0.065
Use #5B56AD 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.