#4275EA#4275EA

#4275EA is a mid, vivid blue. Relative luminance 0.198; OKLCH L 59.1% C 0.185 H 263.9°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#4275EA
RGB	rgb(66, 117, 234)
HSL	hsl(222, 80%, 59%)
HSV	hsv(222, 72%, 92%)
CMYK	cmyk(71.8%, 50%, 0%, 8.2%)
CIE-LAB	lab(51.63, 22.10, -64.18)
CIE-LCH	lch(51.63, 67.87, 289.00°)
OKLab	oklab(59.07% -0.0197 -0.1844)
OKLCH	oklch(59.07% 0.186 263.9)
XYZ	xyz(23.4541, 19.8188, 80.4153)
Luminance	0.1982 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275EA #EAB742

analogous

#42C9EA #4275EA #6342EA

triadic

#4275EA #EA4275 #75EA42

tetradic

#4275EA #EA42C9 #EAB742 #42EA63

square

#4275EA #EA42C9 #EAB742 #42EA63

split-complementary

#4275EA #EA6342 #C9EA42

monochromatic

#123DA0 #1852D7 #4275EA #799DF0 #B0C5F6

Accessibility & contrast

On white

4.23

#4275EA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#4275EA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275EA

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275EA	#FFFFFF	#000000	##000000
##4275EA	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E83EE

Deuteranopia (green-blind)

#0074E8

Tritanopia (blue-blind)

#0091A4

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4275ea;
/* rgb */ color: rgb(66, 117, 234);
/* oklch */ color: oklch(59.1% 0.185 263.9);

Tailwind

colors: {
  custom: {
    50: '#8b9cf1',
    500: '#4275ea',
    950: '#000000',
  },
}

SCSS

$custom: #4275ea;
$custom-light: #8b9cf1;
$custom-dark: #000000;

JSON

{
  "hex": "#4275ea",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 234
  },
  "hsl": {
    "h": 221.786,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59073,
    "c": 0.1855,
    "h": 263.9
  },
  "luminance": 0.19821
}

Semantic roles & 50–950 ramp

primary

#4275EA

secondary

#E5D1A3

accent

#BB31F6

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0E17

muted

#7E7E85

Preview Lab

Preview with #4275EA

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

Preview Lab → · Contrast checker → · Palette generator →