#4271CC#4271CC

#4271CC is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.2% C 0.150 H 262.1°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#4271CC
RGB	rgb(66, 113, 204)
HSL	hsl(220, 58%, 53%)
HSV	hsv(220, 68%, 80%)
CMYK	cmyk(67.6%, 44.6%, 0%, 20%)
CIE-LAB	lab(48.67, 13.85, -51.97)
CIE-LCH	lch(48.67, 53.79, 284.92°)
OKLab	oklab(56.2% -0.0205 -0.1486)
OKLCH	oklch(56.2% 0.15 262.1)
XYZ	xyz(19.0471, 17.3262, 59.4555)
Luminance	0.1733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271CC #CC9D42

analogous

#42B6CC #4271CC #5842CC

triadic

#4271CC #CC4271 #71CC42

tetradic

#4271CC #CC42B6 #CC9D42 #42CC58

square

#4271CC #CC42B6 #CC9D42 #42CC58

split-complementary

#4271CC #CC5842 #B6CC42

monochromatic

#1F3C74 #2C55A4 #4271CC #7295D9 #A2B9E6

Accessibility & contrast

On white

4.70

#4271CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#4271CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271CC

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271CC	#FFFFFF	#000000	##FFFFFF
##4271CC	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#447ACF

Deuteranopia (green-blind)

#2B6ECA

Tritanopia (blue-blind)

#008694

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4271cc;
/* rgb */ color: rgb(66, 113, 204);
/* oklch */ color: oklch(56.2% 0.150 262.1);

Tailwind

colors: {
  custom: {
    50: '#8599dc',
    500: '#4271cc',
    950: '#000000',
  },
}

SCSS

$custom: #4271cc;
$custom-light: #8599dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4271cc",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 204
  },
  "hsl": {
    "h": 219.565,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.56202,
    "c": 0.15003,
    "h": 262.1
  },
  "luminance": 0.17328
}

Semantic roles & 50–950 ramp

primary

#4271CC

secondary

#D3BE97

accent

#AC47E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4271CC

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

Preview Lab → · Contrast checker → · Palette generator →