#427BDB#427BDB

#427BDB is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.3% C 0.159 H 260.2°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#427BDB
RGB	rgb(66, 123, 219)
HSL	hsl(218, 68%, 56%)
HSV	hsv(218, 70%, 86%)
CMYK	cmyk(69.9%, 43.8%, 0%, 14.1%)
CIE-LAB	lab(52.33, 13.00, -54.63)
CIE-LCH	lch(52.33, 56.16, 283.38°)
OKLab	oklab(59.31% -0.0271 -0.1563)
OKLCH	oklch(59.31% 0.159 260.2)
XYZ	xyz(22.1113, 20.4363, 69.7834)
Luminance	0.2044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BDB #DBA242

analogous

#42C7DB #427BDB #5542DB

triadic

#427BDB #DB427B #7BDB42

tetradic

#427BDB #DB42C7 #DBA242 #42DB55

square

#427BDB #DB42C7 #DBA242 #42DB55

split-complementary

#427BDB #DB5542 #C7DB42

monochromatic

#1A4389 #245DBC #427BDB #759FE5 #A9C3EF

Accessibility & contrast

On white

4.13

#427BDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#427BDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BDB

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BDB	#FFFFFF	#000000	##000000
##427BDB	1.00	4.13	5.09	5.09
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C84DF

Deuteranopia (green-blind)

#3076D9

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #427bdb;
/* rgb */ color: rgb(66, 123, 219);
/* oklch */ color: oklch(59.3% 0.159 260.2);

Tailwind

colors: {
  custom: {
    50: '#88a0e7',
    500: '#427bdb',
    950: '#000000',
  },
}

SCSS

$custom: #427bdb;
$custom-light: #88a0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#427bdb",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 219
  },
  "hsl": {
    "h": 217.647,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59308,
    "c": 0.1586,
    "h": 260.2
  },
  "luminance": 0.20439
}

Semantic roles & 50–950 ramp

primary

#427BDB

secondary

#DCC49D

accent

#AA3DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #427BDB

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

Preview Lab → · Contrast checker → · Palette generator →