#4271E0#4271E0

#4271E0 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.6% C 0.177 H 264.3°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#4271E0
RGB	rgb(66, 113, 224)
HSL	hsl(222, 72%, 57%)
HSV	hsv(222, 71%, 88%)
CMYK	cmyk(70.5%, 49.6%, 0%, 12.2%)
CIE-LAB	lab(49.92, 21.01, -61.33)
CIE-LCH	lch(49.92, 64.83, 288.91°)
OKLab	oklab(57.56% -0.0176 -0.1761)
OKLCH	oklch(57.56% 0.177 264.3)
XYZ	xyz(21.6017, 18.3481, 72.9096)
Luminance	0.1835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271E0 #E0B142

analogous

#42C0E0 #4271E0 #6242E0

triadic

#4271E0 #E04271 #71E042

tetradic

#4271E0 #E042C0 #E0B142 #42E062

square

#4271E0 #E042C0 #E0B142 #42E062

split-complementary

#4271E0 #E06242 #C0E042

monochromatic

#183B90 #2051C5 #4271E0 #7799E9 #ABC0F1

Accessibility & contrast

On white

4.50

#4271E0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#4271E0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4271E0

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271E0	#FFFFFF	#000000	##000000
##4271E0	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#307EE4

Deuteranopia (green-blind)

#0070DE

Tritanopia (blue-blind)

#008B9E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4271e0;
/* rgb */ color: rgb(66, 113, 224);
/* oklch */ color: oklch(57.6% 0.177 264.3);

Tailwind

colors: {
  custom: {
    50: '#8999ea',
    500: '#4271e0',
    950: '#000000',
  },
}

SCSS

$custom: #4271e0;
$custom-light: #8999ea;
$custom-dark: #000000;

JSON

{
  "hex": "#4271e0",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 224
  },
  "hsl": {
    "h": 222.152,
    "s": 71.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.57558,
    "c": 0.17701,
    "h": 264.3
  },
  "luminance": 0.1835
}

Semantic roles & 50–950 ramp

primary

#4271E0

secondary

#DFCC9F

accent

#B939EF

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4271E0

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

Preview Lab → · Contrast checker → · Palette generator →