#4273CE#4273CE

#4273CE is a mid, vivid blue. Relative luminance 0.179; OKLCH L 56.8% C 0.150 H 261.6°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#4273CE
RGB	rgb(66, 115, 206)
HSL	hsl(219, 59%, 53%)
HSV	hsv(219, 68%, 81%)
CMYK	cmyk(68%, 44.2%, 0%, 19.2%)
CIE-LAB	lab(49.34, 13.32, -52.04)
CIE-LCH	lch(49.34, 53.71, 284.35°)
OKLab	oklab(56.76% -0.022 -0.1488)
OKLCH	oklch(56.76% 0.15 261.6)
XYZ	xyz(19.5141, 17.8740, 60.8022)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273CE #CE9D42

analogous

#42B9CE #4273CE #5742CE

triadic

#4273CE #CE4273 #73CE42

tetradic

#4273CE #CE42B9 #CE9D42 #42CE57

square

#4273CE #CE42B9 #CE9D42 #42CE57

split-complementary

#4273CE #CE5742 #B9CE42

monochromatic

#1F3E77 #2B57A7 #4273CE #7397DB #A3BBE7

Accessibility & contrast

On white

4.59

#4273CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#4273CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4273CE

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273CE	#FFFFFF	#000000	##FFFFFF
##4273CE	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477CD1

Deuteranopia (green-blind)

#2E6FCC

Tritanopia (blue-blind)

#008896

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4273ce;
/* rgb */ color: rgb(66, 115, 206);
/* oklch */ color: oklch(56.8% 0.150 261.6);

Tailwind

colors: {
  custom: {
    50: '#859add',
    500: '#4273ce',
    950: '#000000',
  },
}

SCSS

$custom: #4273ce;
$custom-light: #859add;
$custom-dark: #000000;

JSON

{
  "hex": "#4273ce",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 206
  },
  "hsl": {
    "h": 219,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.5676,
    "c": 0.15039,
    "h": 261.6
  },
  "luminance": 0.17876
}

Semantic roles & 50–950 ramp

primary

#4273CE

secondary

#D4BF98

accent

#AB46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4273CE

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

Preview Lab → · Contrast checker → · Palette generator →