#5B56B4
Closest named color: Iris (#6258C4). oklch(50.7% 0.144 282.3), rgb(91, 86, 180).
Aa
White text reads best on this color (6.11:1).
About this color
#5B56B4 is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.144 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.028 away. White text reads best on it, at 6.11:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #5B56B4 |
| RGB | rgb(91, 86, 180) |
| HSL | hsl(243, 39%, 52%) |
| OKLCH | oklch(50.7% 0.144 282.3) |
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 #5B56B4 | 6.11:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #5B56B4 | 3.43:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #5B56B4 text on white | 6.11:1 | AA | Lc 80.3 | Fine for body text |
| #5B56B4 text on black | 3.43:1 | AA large text | Lc -21.5 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D5D7F3
oklch(88.6% 0.038 282.3)
-
Step 300
300
#B9BCED
oklch(81% 0.069 282)
-
Step 400
400
#9697E4
oklch(70.6% 0.112 282.6)
-
Step 500
500
#7E7CDD
oklch(63.2% 0.143 282.4)
-
Step 600
600
#6863CA
oklch(55.6% 0.155 282.3)
-
Step 700
700 (this color)
#5B56B4
oklch(50.7% 0.144 282.3)
-
Step 800
800
#47438E
oklch(42.7% 0.12 282.4)
-
Step 900
900
#3B3971
oklch(37.6% 0.094 282.5)
-
Step 950
950
#222242
oklch(27% 0.059 281.7)
#5B56B4 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) | #2765B7 | 0.064 |
| Deuteranopia (no green cones) | #205FB2 | 0.065 |
| Tritanopia (no blue cones) | #3A6B7D | 0.124 |
| Achromatopsia (no color) | #626262 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B56B4
#5B56B4
oklch(50.7% 0.144 282.3)
- #716700
#716700
oklch(50.7% 0.107 102.8)
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 #5B56B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.028
- Slate Blue #6A5ACD ΔE 0.046
- Light Indigo #6D5ACF ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.052
- Bluey Purple #6241C7 ΔE 0.057
- French Blue #436BAD ΔE 0.063
- Warm Blue #4B57DB ΔE 0.064
- Dusky Blue #475F94 ΔE 0.066
Use #5B56B4 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.