#4273C8#4273C8

#4273C8 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.4% C 0.142 H 260.6°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#4273C8
RGB	rgb(66, 115, 200)
HSL	hsl(218, 55%, 52%)
HSV	hsv(218, 67%, 78%)
CMYK	cmyk(67%, 42.5%, 0%, 21.6%)
CIE-LAB	lab(48.99, 11.18, -49.17)
CIE-LCH	lch(48.99, 50.42, 282.81°)
OKLab	oklab(56.38% -0.0232 -0.1403)
OKLCH	oklch(56.38% 0.142 260.6)
XYZ	xyz(18.7991, 17.5880, 57.0365)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273C8 #C89742

analogous

#42B6C8 #4273C8 #5442C8

triadic

#4273C8 #C84273 #73C842

tetradic

#4273C8 #C842B6 #C89742 #42C854

square

#4273C8 #C842B6 #C89742 #42C854

split-complementary

#4273C8 #C85442 #B6C842

monochromatic

#203D6F #2E579F #4273C8 #7196D6 #A1B9E4

Accessibility & contrast

On white

4.65

#4273C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#4273C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4273C8

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273C8	#FFFFFF	#000000	##FFFFFF
##4273C8	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7BCB

Deuteranopia (green-blind)

#356FC6

Tritanopia (blue-blind)

#008794

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4273c8;
/* rgb */ color: rgb(66, 115, 200);
/* oklch */ color: oklch(56.4% 0.142 260.6);

Tailwind

colors: {
  custom: {
    50: '#849ad9',
    500: '#4273c8',
    950: '#000000',
  },
}

SCSS

$custom: #4273c8;
$custom-light: #849ad9;
$custom-dark: #000000;

JSON

{
  "hex": "#4273c8",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 200
  },
  "hsl": {
    "h": 218.06,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.56376,
    "c": 0.14224,
    "h": 260.6
  },
  "luminance": 0.1759
}

Semantic roles & 50–950 ramp

primary

#4273C8

secondary

#D0BB96

accent

#A84ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4273C8

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

Preview Lab → · Contrast checker → · Palette generator →