#4271CD#4271CD

#4271CD is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.3% C 0.151 H 262.3°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#4271CD
RGB	rgb(66, 113, 205)
HSL	hsl(220, 58%, 53%)
HSV	hsv(220, 68%, 80%)
CMYK	cmyk(67.8%, 44.9%, 0%, 19.6%)
CIE-LAB	lab(48.73, 14.21, -52.45)
CIE-LCH	lch(48.73, 54.34, 285.16°)
OKLab	oklab(56.27% -0.0203 -0.15)
OKLCH	oklch(56.27% 0.151 262.3)
XYZ	xyz(19.1674, 17.3744, 60.0892)
Luminance	0.1738 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271CD #CD9E42

analogous

#42B7CD #4271CD #5842CD

triadic

#4271CD #CD4271 #71CD42

tetradic

#4271CD #CD42B7 #CD9E42 #42CD58

square

#4271CD #CD42B7 #CD9E42 #42CD58

split-complementary

#4271CD #CD5842 #B7CD42

monochromatic

#1F3C76 #2C55A6 #4271CD #7295DA #A3BAE7

Accessibility & contrast

On white

4.69

#4271CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#4271CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271CD

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271CD	#FFFFFF	#000000	##FFFFFF
##4271CD	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#447BD0

Deuteranopia (green-blind)

#2A6ECB

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4271cd;
/* rgb */ color: rgb(66, 113, 205);
/* oklch */ color: oklch(56.3% 0.151 262.3);

Tailwind

colors: {
  custom: {
    50: '#8599dd',
    500: '#4271cd',
    950: '#000000',
  },
}

SCSS

$custom: #4271cd;
$custom-light: #8599dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4271cd",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 205
  },
  "hsl": {
    "h": 219.712,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.56267,
    "c": 0.15139,
    "h": 262.3
  },
  "luminance": 0.17376
}

Semantic roles & 50–950 ramp

primary

#4271CD

secondary

#D3BF97

accent

#AD46E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4271CD

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

Preview Lab → · Contrast checker → · Palette generator →