#4273C4#4273C4

#4273C4 is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.1% C 0.137 H 259.9°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#4273C4
RGB	rgb(66, 115, 196)
HSL	hsl(217, 52%, 51%)
HSV	hsv(217, 66%, 77%)
CMYK	cmyk(66.3%, 41.3%, 0%, 23.1%)
CIE-LAB	lab(48.76, 9.76, -47.24)
CIE-LCH	lch(48.76, 48.24, 281.67°)
OKLab	oklab(56.13% -0.024 -0.1347)
OKLCH	oklch(56.13% 0.137 259.9)
XYZ	xyz(18.3378, 17.4034, 54.6066)
Luminance	0.1741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273C4 #C49342

analogous

#42B4C4 #4273C4 #5242C4

triadic

#4273C4 #C44273 #73C442

tetradic

#4273C4 #C442B4 #C49342 #42C452

square

#4273C4 #C442B4 #C49342 #42C452

split-complementary

#4273C4 #C45242 #B4C442

monochromatic

#213D6A #305799 #4273C4 #7196D3 #9FB8E1

Accessibility & contrast

On white

4.69

#4273C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#4273C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4273C4

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273C4	#FFFFFF	#000000	##FFFFFF
##4273C4	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E7AC7

Deuteranopia (green-blind)

#3A6EC2

Tritanopia (blue-blind)

#008692

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4273c4;
/* rgb */ color: rgb(66, 115, 196);
/* oklch */ color: oklch(56.1% 0.137 259.9);

Tailwind

colors: {
  custom: {
    50: '#849ad6',
    500: '#4273c4',
    950: '#000000',
  },
}

SCSS

$custom: #4273c4;
$custom-light: #849ad6;
$custom-dark: #000000;

JSON

{
  "hex": "#4273c4",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 196
  },
  "hsl": {
    "h": 217.385,
    "s": 52.419,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56126,
    "c": 0.13679,
    "h": 259.9
  },
  "luminance": 0.17405
}

Semantic roles & 50–950 ramp

primary

#4273C4

secondary

#CEB894

accent

#A64CDC

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4273C4

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

Preview Lab → · Contrast checker → · Palette generator →