#4B5FEF
Closest named color: Neon Blue (#4361EE). oklch(55.7% 0.216 271.4), rgb(75, 95, 239).
Aa
White text reads best on this color (5.02:1).
About this color
#4B5FEF is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.216 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.009 away. White text reads best on it, at 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.216) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.18:1 |
| White text | 5.02:1 |
Values
| HEX | #4B5FEF |
| RGB | rgb(75, 95, 239) |
| HSL | hsl(233, 84%, 62%) |
| OKLCH | oklch(55.7% 0.216 271.4) |
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 #4B5FEF | 5.02:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #4B5FEF | 4.18:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #4B5FEF text on white | 5.02:1 | AA | Lc 74.1 | Content text, not long reading |
| #4B5FEF text on black | 4.18:1 | AA large text | Lc -27.6 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CCD8FE
oklch(88.5% 0.054 271.5)
-
Step 300
300
#AABDFF
oklch(80.8% 0.096 271.7)
-
Step 400
400
#7F99FF
oklch(70.8% 0.152 271.3)
-
Step 500
500
#617AFF
oklch(63% 0.198 271.6)
-
Step 600
600 (this color)
#4B5FEF
oklch(55.7% 0.216 271.4)
-
Step 700
700
#3D4DD0
oklch(49.2% 0.201 271.4)
-
Step 800
800
#3240A8
oklch(42.7% 0.166 271.5)
-
Step 900
900
#2B3885
oklch(37.7% 0.129 271.5)
-
Step 950
950
#19224E
oklch(27.1% 0.081 271.3)
#4B5FEF 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) | #0077F4 | 0.063 |
| Deuteranopia (no green cones) | #0068EC | 0.046 |
| Tritanopia (no blue cones) | #00839E | 0.173 |
| Achromatopsia (no color) | #6F6F6F | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B5FEF
#4B5FEF
oklch(55.7% 0.216 271.4)
- #8C7000
#8C7000
oklch(55.6% 0.114 91.4)
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 #4B5FEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.009
- Royal Blue #4169E1 ΔE 0.033
- Warm Blue #4B57DB ΔE 0.035
- Azul #1D5DEC ΔE 0.041
- Bright Blue #0165FC ΔE 0.048
- Cerulean Blue #056EEE ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.058
- Electric Blue #0652FF ΔE 0.065
Use #4B5FEF 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.