#4273C2#4273C2

#4273C2 is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.0% C 0.134 H 259.5°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#4273C2
RGB	rgb(66, 115, 194)
HSL	hsl(217, 51%, 51%)
HSV	hsv(217, 66%, 76%)
CMYK	cmyk(66%, 40.7%, 0%, 23.9%)
CIE-LAB	lab(48.65, 9.05, -46.27)
CIE-LCH	lch(48.65, 47.14, 281.07°)
OKLab	oklab(56% -0.0244 -0.1318)
OKLCH	oklch(56% 0.134 259.5)
XYZ	xyz(18.1116, 17.3130, 53.4157)
Luminance	0.1731 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273C2 #C29142

analogous

#42B3C2 #4273C2 #5142C2

triadic

#4273C2 #C24273 #73C242

tetradic

#4273C2 #C242B3 #C29142 #42C251

square

#4273C2 #C242B3 #C29142 #42C251

split-complementary

#4273C2 #C25142 #B3C242

monochromatic

#223D68 #315796 #4273C2 #7095D1 #9FB8E0

Accessibility & contrast

On white

4.71

#4273C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#4273C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4273C2

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273C2	#FFFFFF	#000000	##FFFFFF
##4273C2	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F7AC5

Deuteranopia (green-blind)

#3C6EC0

Tritanopia (blue-blind)

#008591

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4273c2;
/* rgb */ color: rgb(66, 115, 194);
/* oklch */ color: oklch(56.0% 0.134 259.5);

Tailwind

colors: {
  custom: {
    50: '#839ad5',
    500: '#4273c2',
    950: '#000000',
  },
}

SCSS

$custom: #4273c2;
$custom-light: #839ad5;
$custom-dark: #000000;

JSON

{
  "hex": "#4273c2",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 194
  },
  "hsl": {
    "h": 217.031,
    "s": 51.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.56002,
    "c": 0.13407,
    "h": 259.5
  },
  "luminance": 0.17315
}

Semantic roles & 50–950 ramp

primary

#4273C2

secondary

#CCB794

accent

#A44DDB

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4273C2

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

Preview Lab → · Contrast checker → · Palette generator →