#4271FF#4271FF

#4271FF is a mid, highly saturated blue. Relative luminance 0.202; OKLCH L 59.8% C 0.217 H 266.0°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#4271FF
RGB	rgb(66, 113, 255)
HSL	hsl(225, 100%, 63%)
HSV	hsv(225, 74%, 100%)
CMYK	cmyk(74.1%, 55.7%, 0%, 0%)
CIE-LAB	lab(52.05, 32.08, -75.19)
CIE-LCH	lch(52.05, 81.75, 293.11°)
OKLab	oklab(59.84% -0.0151 -0.2169)
OKLCH	oklch(59.84% 0.217 266)
XYZ	xyz(26.1956, 20.1856, 97.1040)
Luminance	0.2019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271FF #FFD042

analogous

#42D0FF #4271FF #7142FF

triadic

#4271FF #FF4271 #71FF42

tetradic

#4271FF #FF42D0 #FFD042 #42FF71

square

#4271FF #FF42D0 #FFD042 #42FF71

split-complementary

#4271FF #FF7142 #D0FF42

monochromatic

#0031C7 #0543FF #4271FF #7F9FFF #BCCDFF

Accessibility & contrast

On white

4.17

#4271FF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#4271FF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4271FF

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271FF	#FFFFFF	#000000	##000000
##4271FF	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0085FF

Deuteranopia (green-blind)

#0074FC

Tritanopia (blue-blind)

#0094AD

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4271ff;
/* rgb */ color: rgb(66, 113, 255);
/* oklch */ color: oklch(59.8% 0.217 266.0);

Tailwind

colors: {
  custom: {
    50: '#8f99ff',
    500: '#4271ff',
    950: '#000000',
  },
}

SCSS

$custom: #4271ff;
$custom-light: #8f99ff;
$custom-dark: #000000;

JSON

{
  "hex": "#4271ff",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 255
  },
  "hsl": {
    "h": 225.079,
    "s": 100,
    "l": 62.941
  },
  "oklch": {
    "l": 0.59844,
    "c": 0.21743,
    "h": 266
  },
  "luminance": 0.20189
}

Semantic roles & 50–950 ramp

primary

#4271FF

secondary

#F0DFAC

accent

#AC00E6

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0D18

muted

#7E7E86

Preview Lab

Preview with #4271FF

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

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