#4273D2#4273D2

#4273D2 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.0% C 0.156 H 262.1°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#4273D2
RGB	rgb(66, 115, 210)
HSL	hsl(220, 62%, 54%)
HSV	hsv(220, 69%, 82%)
CMYK	cmyk(68.6%, 45.2%, 0%, 17.6%)
CIE-LAB	lab(49.58, 14.75, -53.93)
CIE-LCH	lch(49.58, 55.91, 285.29°)
OKLab	oklab(57.02% -0.0213 -0.1543)
OKLCH	oklch(57.02% 0.156 262.1)
XYZ	xyz(20.0062, 18.0708, 63.3939)
Luminance	0.1807 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273D2 #D2A142

analogous

#42BBD2 #4273D2 #5942D2

triadic

#4273D2 #D24273 #73D242

tetradic

#4273D2 #D242BB #D2A142 #42D259

square

#4273D2 #D242BB #D2A142 #42D259

split-complementary

#4273D2 #D25942 #BBD242

monochromatic

#1E3E7C #2956AD #4273D2 #7398DE #A5BCEA

Accessibility & contrast

On white

4.55

#4273D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#4273D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4273D2

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273D2	#FFFFFF	#000000	##000000
##4273D2	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#437DD6

Deuteranopia (green-blind)

#2770D0

Tritanopia (blue-blind)

#008998

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4273d2;
/* rgb */ color: rgb(66, 115, 210);
/* oklch */ color: oklch(57.0% 0.156 262.1);

Tailwind

colors: {
  custom: {
    50: '#869ae0',
    500: '#4273d2',
    950: '#000000',
  },
}

SCSS

$custom: #4273d2;
$custom-light: #869ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#4273d2",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 210
  },
  "hsl": {
    "h": 219.583,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.57021,
    "c": 0.15581,
    "h": 262.1
  },
  "luminance": 0.18073
}

Semantic roles & 50–950 ramp

primary

#4273D2

secondary

#D7C299

accent

#AE43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4273D2

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

Preview Lab → · Contrast checker → · Palette generator →