#4B59EF
Closest named color: Neon Blue (#4361EE). oklch(54.7% 0.223 272.5), rgb(75, 89, 239).
Aa
White text reads best on this color (5.28:1).
About this color
#4B59EF is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.223 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.018 away. White text reads best on it, at 5.28:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.223) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #4B59EF |
| RGB | rgb(75, 89, 239) |
| HSL | hsl(235, 84%, 62%) |
| OKLCH | oklch(54.7% 0.223 272.5) |
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 #4B59EF | 5.28:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #4B59EF | 3.97:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #4B59EF text on white | 5.28:1 | AA | Lc 75.6 | Fine for body text |
| #4B59EF text on black | 3.97:1 | AA large text | Lc -26.1 | 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
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8198FF
oklch(70.7% 0.153 272.5)
-
Step 500
500
#6479FF
oklch(63% 0.199 272.7)
-
Step 600
600 (this color)
#4B59EF
oklch(54.7% 0.223 272.5)
-
Step 700
700
#3F4AD3
oklch(49.1% 0.207 272.5)
-
Step 800
800
#343EAA
oklch(42.7% 0.171 272.7)
-
Step 900
900
#2C3787
oklch(37.8% 0.133 272.4)
-
Step 950
950
#19214F
oklch(27% 0.085 272.1)
#4B59EF 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) | #0073F4 | 0.066 |
| Deuteranopia (no green cones) | #0064EC | 0.049 |
| Tritanopia (no blue cones) | #00809C | 0.179 |
| Achromatopsia (no color) | #6C6C6C | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B59EF
#4B59EF
oklch(54.7% 0.223 272.5)
- #886E00
#886E00
oklch(54.8% 0.112 92.4)
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 #4B59EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.018
- Warm Blue #4B57DB ΔE 0.031
- Azul #1D5DEC ΔE 0.039
- Royal Blue #4169E1 ΔE 0.043
- Bright Blue #0165FC ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.058
- Electric Blue #0652FF ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.062
Use #4B59EF 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.