#4271C2#4271C2

#4271C2 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.6% C 0.136 H 260.5°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#4271C2
RGB	rgb(66, 113, 194)
HSL	hsl(218, 51%, 51%)
HSV	hsv(218, 66%, 76%)
CMYK	cmyk(66%, 41.8%, 0%, 23.9%)
CIE-LAB	lab(48.09, 10.29, -47.17)
CIE-LCH	lch(48.09, 48.28, 282.31°)
OKLab	oklab(55.56% -0.0224 -0.1345)
OKLCH	oklch(55.56% 0.136 260.5)
XYZ	xyz(17.8860, 16.8618, 53.3405)
Luminance	0.1686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271C2 #C29342

analogous

#42B1C2 #4271C2 #5342C2

triadic

#4271C2 #C24271 #71C242

tetradic

#4271C2 #C242B1 #C29342 #42C253

square

#4271C2 #C242B1 #C29342 #42C253

split-complementary

#4271C2 #C25342 #B1C242

monochromatic

#223B68 #315696 #4271C2 #7094D1 #9FB7E0

Accessibility & contrast

On white

4.80

#4271C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#4271C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271C2

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271C2	#FFFFFF	#000000	##FFFFFF
##4271C2	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C79C5

Deuteranopia (green-blind)

#386DC0

Tritanopia (blue-blind)

#008490

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4271c2;
/* rgb */ color: rgb(66, 113, 194);
/* oklch */ color: oklch(55.6% 0.136 260.5);

Tailwind

colors: {
  custom: {
    50: '#8399d5',
    500: '#4271c2',
    950: '#000000',
  },
}

SCSS

$custom: #4271c2;
$custom-light: #8399d5;
$custom-dark: #000000;

JSON

{
  "hex": "#4271c2",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 194
  },
  "hsl": {
    "h": 217.969,
    "s": 51.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.55564,
    "c": 0.13636,
    "h": 260.5
  },
  "luminance": 0.16864
}

Semantic roles & 50–950 ramp

primary

#4271C2

secondary

#CCB794

accent

#A74DDB

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #4271C2

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

Preview Lab → · Contrast checker → · Palette generator →