#5B55D2
Closest named color: Warm Blue (#4B57DB). oklch(52.7% 0.186 280), rgb(91, 85, 210).
Aa
White text reads best on this color (5.71:1).
About this color
#5B55D2 is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.186 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 5.71:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.67:1 |
| White text | 5.71:1 |
Values
| HEX | #5B55D2 |
| RGB | rgb(91, 85, 210) |
| HSL | hsl(243, 58%, 58%) |
| OKLCH | oklch(52.7% 0.186 280) |
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 #5B55D2 | 5.71:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #5B55D2 | 3.67:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #5B55D2 text on white | 5.71:1 | AA | Lc 78.2 | Fine for body text |
| #5B55D2 text on black | 3.67:1 | AA large text | Lc -23.6 | 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
#E6E8FA
oklch(93.5% 0.024 280.9)
-
Step 200
200
#D2D6F8
oklch(88.4% 0.047 280.1)
-
Step 300
300
#B5BBF7
oklch(80.9% 0.085 279.9)
-
Step 400
400
#9196F2
oklch(70.7% 0.134 280)
-
Step 500
500
#7879EE
oklch(63.2% 0.172 279.9)
-
Step 600
600 (this color)
#5B55D2
oklch(52.7% 0.186 280)
-
Step 700
700
#524DBF
oklch(49.1% 0.173 279.9)
-
Step 800
800
#43409A
oklch(42.7% 0.143 280)
-
Step 900
900
#38377B
oklch(37.7% 0.113 280.2)
-
Step 950
950
#202148
oklch(27% 0.071 279.4)
#5B55D2 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) | #006BD6 | 0.078 |
| Deuteranopia (no green cones) | #0062CF | 0.074 |
| Tritanopia (no blue cones) | #18738B | 0.161 |
| Achromatopsia (no color) | #666666 | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B55D2
#5B55D2
oklch(52.7% 0.186 280)
- #7A6B00
#7A6B00
oklch(52.6% 0.109 99.6)
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 #5B55D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Iris #6258C4 ΔE 0.026
- Slate Blue #6A5ACD ΔE 0.028
- Dark Periwinkle #665FD1 ΔE 0.031
- Light Indigo #6D5ACF ΔE 0.032
- Bluey Purple #6241C7 ΔE 0.045
- Royal Blue #4169E1 ΔE 0.055
- Neon Blue #4361EE ΔE 0.055
Use #5B55D2 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.