#4271C8#4271C8

#4271C8 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.145 H 261.6°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4271C8
RGB	rgb(66, 113, 200)
HSL	hsl(219, 55%, 52%)
HSV	hsv(219, 67%, 78%)
CMYK	cmyk(67%, 43.5%, 0%, 21.6%)
CIE-LAB	lab(48.43, 12.43, -50.06)
CIE-LCH	lch(48.43, 51.58, 283.94°)
OKLab	oklab(55.94% -0.0212 -0.143)
OKLCH	oklch(55.94% 0.145 261.6)
XYZ	xyz(18.5735, 17.1368, 56.9613)
Luminance	0.1714 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271C8 #C89942

analogous

#42B4C8 #4271C8 #5642C8

triadic

#4271C8 #C84271 #71C842

tetradic

#4271C8 #C842B4 #C89942 #42C856

square

#4271C8 #C842B4 #C89942 #42C856

split-complementary

#4271C8 #C85642 #B4C842

monochromatic

#203C6F #2E569F #4271C8 #7195D6 #A1B8E4

Accessibility & contrast

On white

4.74

#4271C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#4271C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271C8

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271C8	#FFFFFF	#000000	##FFFFFF
##4271C8	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477ACB

Deuteranopia (green-blind)

#316DC6

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4271c8;
/* rgb */ color: rgb(66, 113, 200);
/* oklch */ color: oklch(55.9% 0.145 261.6);

Tailwind

colors: {
  custom: {
    50: '#8499d9',
    500: '#4271c8',
    950: '#000000',
  },
}

SCSS

$custom: #4271c8;
$custom-light: #8499d9;
$custom-dark: #000000;

JSON

{
  "hex": "#4271c8",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 200
  },
  "hsl": {
    "h": 218.955,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.55943,
    "c": 0.14457,
    "h": 261.6
  },
  "luminance": 0.17139
}

Semantic roles & 50–950 ramp

primary

#4271C8

secondary

#D0BC96

accent

#AA4ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4271C8

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

Preview Lab → · Contrast checker → · Palette generator →