#427BDE#427BDE

#427BDE is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.5% C 0.163 H 260.6°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#427BDE
RGB	rgb(66, 123, 222)
HSL	hsl(218, 70%, 56%)
HSV	hsv(218, 70%, 87%)
CMYK	cmyk(70.3%, 44.6%, 0%, 12.9%)
CIE-LAB	lab(52.50, 14.07, -56.04)
CIE-LCH	lch(52.50, 57.78, 284.10°)
OKLab	oklab(59.5% -0.0265 -0.1604)
OKLCH	oklch(59.5% 0.163 260.6)
XYZ	xyz(22.5098, 20.5957, 71.8821)
Luminance	0.2060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BDE #DEA542

analogous

#42C9DE #427BDE #5742DE

triadic

#427BDE #DE427B #7BDE42

tetradic

#427BDE #DE42C9 #DEA542 #42DE57

square

#427BDE #DE42C9 #DEA542 #42DE57

split-complementary

#427BDE #DE5742 #C9DE42

monochromatic

#19438D #225CC1 #427BDE #769FE7 #AAC4F0

Accessibility & contrast

On white

4.10

#427BDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#427BDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BDE

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BDE	#FFFFFF	#000000	##000000
##427BDE	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4985E2

Deuteranopia (green-blind)

#2B77DC

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #427bde;
/* rgb */ color: rgb(66, 123, 222);
/* oklch */ color: oklch(59.5% 0.163 260.6);

Tailwind

colors: {
  custom: {
    50: '#88a0e9',
    500: '#427bde',
    950: '#000000',
  },
}

SCSS

$custom: #427bde;
$custom-light: #88a0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#427bde",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 222
  },
  "hsl": {
    "h": 218.077,
    "s": 70.27,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59501,
    "c": 0.16259,
    "h": 260.6
  },
  "luminance": 0.20598
}

Semantic roles & 50–950 ramp

primary

#427BDE

secondary

#DEC79E

accent

#AC3BED

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #427BDE

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

Preview Lab → · Contrast checker → · Palette generator →