#4271D2#4271D2

#4271D2 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.6% C 0.158 H 262.9°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#4271D2
RGB	rgb(66, 113, 210)
HSL	hsl(220, 62%, 54%)
HSV	hsv(220, 69%, 82%)
CMYK	cmyk(68.6%, 46.2%, 0%, 17.6%)
CIE-LAB	lab(49.03, 16.00, -54.81)
CIE-LCH	lch(49.03, 57.10, 286.27°)
OKLab	oklab(56.6% -0.0195 -0.157)
OKLCH	oklch(56.6% 0.158 262.9)
XYZ	xyz(19.7806, 17.6196, 63.3187)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271D2 #D2A342

analogous

#42B9D2 #4271D2 #5B42D2

triadic

#4271D2 #D24271 #71D242

tetradic

#4271D2 #D242B9 #D2A342 #42D25B

square

#4271D2 #D242B9 #D2A342 #42D25B

split-complementary

#4271D2 #D25B42 #B9D242

monochromatic

#1E3C7C #2954AD #4271D2 #7396DE #A5BBEA

Accessibility & contrast

On white

4.64

#4271D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#4271D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4271D2

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271D2	#FFFFFF	#000000	##FFFFFF
##4271D2	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7CD6

Deuteranopia (green-blind)

#216ED0

Tritanopia (blue-blind)

#008897

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4271d2;
/* rgb */ color: rgb(66, 113, 210);
/* oklch */ color: oklch(56.6% 0.158 262.9);

Tailwind

colors: {
  custom: {
    50: '#8699e0',
    500: '#4271d2',
    950: '#000000',
  },
}

SCSS

$custom: #4271d2;
$custom-light: #8699e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4271d2",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 210
  },
  "hsl": {
    "h": 220.417,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.56598,
    "c": 0.15818,
    "h": 262.9
  },
  "luminance": 0.17622
}

Semantic roles & 50–950 ramp

primary

#4271D2

secondary

#D7C399

accent

#B043E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4271D2

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

Preview Lab → · Contrast checker → · Palette generator →