#4271EE#4271EE

#4271EE is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.6% C 0.195 H 265.2°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#4271EE
RGB	rgb(66, 113, 238)
HSL	hsl(224, 83%, 60%)
HSV	hsv(224, 72%, 93%)
CMYK	cmyk(72.3%, 52.5%, 0%, 6.7%)
CIE-LAB	lab(50.85, 26.03, -67.68)
CIE-LCH	lch(50.85, 72.51, 291.04°)
OKLab	oklab(58.56% -0.0162 -0.1948)
OKLCH	oklch(58.56% 0.195 265.2)
XYZ	xyz(23.5791, 19.1390, 83.3239)
Luminance	0.1914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271EE #EEBF42

analogous

#42C7EE #4271EE #6942EE

triadic

#4271EE #EE4271 #71EE42

tetradic

#4271EE #EE42C7 #EEBF42 #42EE69

square

#4271EE #EE42C7 #EEBF42 #42EE69

split-complementary

#4271EE #EE6942 #C7EE42

monochromatic

#0F38A7 #144BDF #4271EE #7A9BF3 #B2C5F8

Accessibility & contrast

On white

4.35

#4271EE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#4271EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4271EE

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271EE	#FFFFFF	#000000	##000000
##4271EE	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1481F2

Deuteranopia (green-blind)

#0072EC

Tritanopia (blue-blind)

#008FA5

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4271ee;
/* rgb */ color: rgb(66, 113, 238);
/* oklch */ color: oklch(58.6% 0.195 265.2);

Tailwind

colors: {
  custom: {
    50: '#8c99f4',
    500: '#4271ee',
    950: '#000000',
  },
}

SCSS

$custom: #4271ee;
$custom-light: #8c99f4;
$custom-dark: #000000;

JSON

{
  "hex": "#4271ee",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 238
  },
  "hsl": {
    "h": 223.605,
    "s": 83.495,
    "l": 59.608
  },
  "oklch": {
    "l": 0.58564,
    "c": 0.19549,
    "h": 265.2
  },
  "luminance": 0.19142
}

Semantic roles & 50–950 ramp

primary

#4271EE

secondary

#E7D5A5

accent

#C22EFA

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0D17

muted

#7E7E85

Preview Lab

Preview with #4271EE

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

Preview Lab → · Contrast checker → · Palette generator →