#4387EF#4387EF

#4387EF is a light, vivid blue. Relative luminance 0.248; OKLCH L 63.2% C 0.171 H 258.8°. Best body text is #000000 at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#4387EF
RGB	rgb(67, 135, 239)
HSL	hsl(216, 84%, 60%)
HSV	hsv(216, 72%, 94%)
CMYK	cmyk(72%, 43.5%, 0%, 6.3%)
CIE-LAB	lab(56.83, 12.93, -58.60)
CIE-LCH	lch(56.83, 60.01, 282.44°)
OKLab	oklab(63.17% -0.0333 -0.1677)
OKLCH	oklch(63.17% 0.171 258.8)
XYZ	xyz(26.5530, 24.7503, 85.0225)
Luminance	0.2475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4387EF #EFAB43

analogous

#43DDEF #4387EF #5543EF

triadic

#4387EF #EF4387 #87EF43

tetradic

#4387EF #EF43DD #EFAB43 #43EF55

square

#4387EF #EF43DD #EFAB43 #43EF55

split-complementary

#4387EF #EF5543 #DDEF43

monochromatic

#0E4CA9 #1365E2 #4387EF #7BABF4 #B4CFF9

Accessibility & contrast

On white

3.53

#4387EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.95

#4387EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4387EF

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4387EF	#FFFFFF	#000000	##000000
##4387EF	1.00	3.53	5.95	5.95
#FFFFFF	3.53	1.00	21.00	21.00
#000000	5.95	21.00	1.00	1.00
##000000	5.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5391F3

Deuteranopia (green-blind)

#3281ED

Tritanopia (blue-blind)

#009FAF

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #4387ef;
/* rgb */ color: rgb(67, 135, 239);
/* oklch */ color: oklch(63.2% 0.171 258.8);

Tailwind

colors: {
  custom: {
    50: '#8ba9f5',
    500: '#4387ef',
    950: '#000000',
  },
}

SCSS

$custom: #4387ef;
$custom-light: #8ba9f5;
$custom-dark: #000000;

JSON

{
  "hex": "#4387ef",
  "rgb": {
    "r": 67,
    "g": 135,
    "b": 239
  },
  "hsl": {
    "h": 216.279,
    "s": 84.314,
    "l": 60
  },
  "oklch": {
    "l": 0.63172,
    "c": 0.171,
    "h": 258.8
  },
  "luminance": 0.24753
}

Semantic roles & 50–950 ramp

primary

#4387EF

secondary

#E8CEA6

accent

#A92DFB

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #4387EF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →