#4273C7#4273C7

#4273C7 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.3% C 0.141 H 260.5°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4273C7
RGB	rgb(66, 115, 199)
HSL	hsl(218, 54%, 52%)
HSV	hsv(218, 67%, 78%)
CMYK	cmyk(66.8%, 42.2%, 0%, 22%)
CIE-LAB	lab(48.94, 10.82, -48.69)
CIE-LCH	lch(48.94, 49.87, 282.53°)
OKLab	oklab(56.31% -0.0233 -0.1389)
OKLCH	oklch(56.31% 0.141 260.5)
XYZ	xyz(18.6826, 17.5414, 56.4230)
Luminance	0.1754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273C7 #C79642

analogous

#42B6C7 #4273C7 #5442C7

triadic

#4273C7 #C74273 #73C742

tetradic

#4273C7 #C742B6 #C79642 #42C754

square

#4273C7 #C742B6 #C79642 #42C754

split-complementary

#4273C7 #C75442 #B6C742

monochromatic

#213D6E #2F579D #4273C7 #7196D5 #A0B9E3

Accessibility & contrast

On white

4.66

#4273C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#4273C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4273C7

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273C7	#FFFFFF	#000000	##FFFFFF
##4273C7	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7BCA

Deuteranopia (green-blind)

#366FC5

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4273c7;
/* rgb */ color: rgb(66, 115, 199);
/* oklch */ color: oklch(56.3% 0.141 260.5);

Tailwind

colors: {
  custom: {
    50: '#849ad8',
    500: '#4273c7',
    950: '#000000',
  },
}

SCSS

$custom: #4273c7;
$custom-light: #849ad8;
$custom-dark: #000000;

JSON

{
  "hex": "#4273c7",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 199
  },
  "hsl": {
    "h": 217.895,
    "s": 54.286,
    "l": 51.961
  },
  "oklch": {
    "l": 0.56313,
    "c": 0.14088,
    "h": 260.5
  },
  "luminance": 0.17543
}

Semantic roles & 50–950 ramp

primary

#4273C7

secondary

#D0BA95

accent

#A74ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4273C7

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

Preview Lab → · Contrast checker → · Palette generator →