#5B5CF4
Closest named color: Neon Blue (#4361EE). oklch(56.6% 0.222 276.4), rgb(91, 92, 244).
Aa
White text reads best on this color (4.90:1).
About this color
#5B5CF4 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.222 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.031 away. White text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.222) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #5B5CF4 |
| RGB | rgb(91, 92, 244) |
| HSL | hsl(240, 87%, 66%) |
| OKLCH | oklch(56.6% 0.222 276.4) |
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 #5B5CF4 | 4.90:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #5B5CF4 | 4.28:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #5B5CF4 text on white | 4.90:1 | AA | Lc 73.4 | Content text, not long reading |
| #5B5CF4 text on black | 4.28:1 | AA large text | Lc -28.3 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FE
oklch(88.6% 0.054 276.1)
-
Step 300
300
#B0BBFF
oklch(80.8% 0.097 276.9)
-
Step 400
400
#8895FF
oklch(70.6% 0.155 276.4)
-
Step 500
500
#6E76FF
oklch(63.1% 0.2 276.5)
-
Step 600
600 (this color)
#5B5CF4
oklch(56.6% 0.222 276.4)
-
Step 700
700
#4947D2
oklch(49.1% 0.207 276.2)
-
Step 800
800
#3C3CA9
oklch(42.7% 0.17 276.5)
-
Step 900
900
#323586
oklch(37.7% 0.133 276.4)
-
Step 950
950
#1D204E
oklch(27% 0.083 276.5)
#5B5CF4 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) | #0077F9 | 0.077 |
| Deuteranopia (no green cones) | #006AF1 | 0.066 |
| Tritanopia (no blue cones) | #0082A0 | 0.183 |
| Achromatopsia (no color) | #717171 | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B5CF4
#5B5CF4
oklch(56.6% 0.222 276.4)
- #8A7500
#8A7500
oklch(56.5% 0.116 96.5)
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 #5B5CF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.031
- Warm Blue #4B57DB ΔE 0.046
- Royal Blue #4169E1 ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.056
- Medium Slate Blue #7B68EE ΔE 0.058
- Azul #1D5DEC ΔE 0.061
- Light Indigo #6D5ACF ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.063
Use #5B5CF4 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.