#4271D6#4271D6

#4271D6 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.9% C 0.164 H 263.4°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#4271D6
RGB	rgb(66, 113, 214)
HSL	hsl(221, 64%, 55%)
HSV	hsv(221, 69%, 84%)
CMYK	cmyk(69.2%, 47.2%, 0%, 16.1%)
CIE-LAB	lab(49.28, 17.43, -56.69)
CIE-LCH	lch(49.28, 59.31, 287.09°)
OKLab	oklab(56.87% -0.0189 -0.1625)
OKLCH	oklch(56.87% 0.164 263.4)
XYZ	xyz(20.2852, 17.8215, 65.9761)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271D6 #D6A742

analogous

#42BBD6 #4271D6 #5D42D6

triadic

#4271D6 #D64271 #71D642

tetradic

#4271D6 #D642BB #D6A742 #42D65D

square

#4271D6 #D642BB #D6A742 #42D65D

split-complementary

#4271D6 #D65D42 #BBD642

monochromatic

#1C3C82 #2754B4 #4271D6 #7497E1 #A7BDEC

Accessibility & contrast

On white

4.60

#4271D6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#4271D6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4271D6

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271D6	#FFFFFF	#000000	##FFFFFF
##4271D6	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7CDA

Deuteranopia (green-blind)

#176FD4

Tritanopia (blue-blind)

#008999

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4271d6;
/* rgb */ color: rgb(66, 113, 214);
/* oklch */ color: oklch(56.9% 0.164 263.4);

Tailwind

colors: {
  custom: {
    50: '#8799e3',
    500: '#4271d6',
    950: '#000000',
  },
}

SCSS

$custom: #4271d6;
$custom-light: #8799e3;
$custom-dark: #000000;

JSON

{
  "hex": "#4271d6",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 214
  },
  "hsl": {
    "h": 220.946,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.56867,
    "c": 0.16359,
    "h": 263.4
  },
  "luminance": 0.17824
}

Semantic roles & 50–950 ramp

primary

#4271D6

secondary

#D9C59B

accent

#B240E7

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0D15

muted

#7D7E84

Preview Lab

Preview with #4271D6

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

Preview Lab → · Contrast checker → · Palette generator →