#427FDE#427FDE

#427FDE is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.4% C 0.158 H 259.0°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#427FDE
RGB	rgb(66, 127, 222)
HSL	hsl(217, 70%, 56%)
HSV	hsv(217, 70%, 87%)
CMYK	cmyk(70.3%, 42.8%, 0%, 12.9%)
CIE-LAB	lab(53.61, 11.61, -54.27)
CIE-LCH	lch(53.61, 55.50, 282.08°)
OKLab	oklab(60.35% -0.0301 -0.1551)
OKLCH	oklch(60.35% 0.158 259)
XYZ	xyz(23.0162, 21.6085, 72.0509)
Luminance	0.2161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FDE #DEA142

analogous

#42CDDE #427FDE #5342DE

triadic

#427FDE #DE427F #7FDE42

tetradic

#427FDE #DE42CD #DEA142 #42DE53

square

#427FDE #DE42CD #DEA142 #42DE53

split-complementary

#427FDE #DE5342 #CDDE42

monochromatic

#19468D #2260C1 #427FDE #76A2E7 #AAC6F0

Accessibility & contrast

On white

3.95

#427FDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#427FDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FDE

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FDE	#FFFFFF	#000000	##000000
##427FDE	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5188E2

Deuteranopia (green-blind)

#3579DC

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #427fde;
/* rgb */ color: rgb(66, 127, 222);
/* oklch */ color: oklch(60.4% 0.158 259.0);

Tailwind

colors: {
  custom: {
    50: '#88a3e9',
    500: '#427fde',
    950: '#000000',
  },
}

SCSS

$custom: #427fde;
$custom-light: #88a3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#427fde",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 222
  },
  "hsl": {
    "h": 216.538,
    "s": 70.27,
    "l": 56.471
  },
  "oklch": {
    "l": 0.60354,
    "c": 0.15803,
    "h": 259
  },
  "luminance": 0.21611
}

Semantic roles & 50–950 ramp

primary

#427FDE

secondary

#DEC59E

accent

#A73BED

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #427FDE

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

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