#5B56CC
Closest named color: Iris (#6258C4). oklch(52.4% 0.177 280.2), rgb(91, 86, 204).
Aa
White text reads best on this color (5.75:1).
About this color
#5B56CC is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.177 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.018 away. White text reads best on it, at 5.75:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.64:1 |
| White text | 5.75:1 |
Values
| HEX | #5B56CC |
| RGB | rgb(91, 86, 204) |
| HSL | hsl(243, 54%, 57%) |
| OKLCH | oklch(52.4% 0.177 280.2) |
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 #5B56CC | 5.75:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #5B56CC | 3.64:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #5B56CC text on white | 5.75:1 | AA | Lc 78.4 | Fine for body text |
| #5B56CC text on black | 3.64:1 | AA large text | Lc -23.4 | 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 600.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D3D7F7
oklch(88.6% 0.044 279.8)
-
Step 300
300
#B6BBF4
oklch(80.8% 0.081 280.5)
-
Step 400
400
#9296EE
oklch(70.6% 0.128 280.6)
-
Step 500
500
#797AE9
oklch(63.1% 0.163 280.3)
-
Step 600
600 (this color)
#5B56CC
oklch(52.4% 0.177 280.2)
-
Step 700
700
#534EBA
oklch(49% 0.165 280.5)
-
Step 800
800
#444197
oklch(42.8% 0.137 280.5)
-
Step 900
900
#383878
oklch(37.7% 0.106 280)
-
Step 950
950
#212146
oklch(26.9% 0.067 280.9)
#5B56CC 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) | #006AD0 | 0.077 |
| Deuteranopia (no green cones) | #0061CA | 0.074 |
| Tritanopia (no blue cones) | #227289 | 0.152 |
| Achromatopsia (no color) | #666666 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B56CC
#5B56CC
oklch(52.4% 0.177 280.2)
- #796B00
#796B00
oklch(52.5% 0.109 100.3)
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 #5B56CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.018
- Slate Blue #6A5ACD ΔE 0.026
- Dark Periwinkle #665FD1 ΔE 0.029
- Light Indigo #6D5ACF ΔE 0.031
- Warm Blue #4B57DB ΔE 0.032
- Bluey Purple #6241C7 ΔE 0.045
- Royal Blue #4169E1 ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
Use #5B56CC 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.