#427BDD#427BDD

#427BDD is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.4% C 0.161 H 260.5°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#427BDD
RGB	rgb(66, 123, 221)
HSL	hsl(218, 70%, 56%)
HSV	hsv(218, 70%, 87%)
CMYK	cmyk(70.1%, 44.3%, 0%, 13.3%)
CIE-LAB	lab(52.44, 13.71, -55.57)
CIE-LCH	lch(52.44, 57.24, 283.86°)
OKLab	oklab(59.44% -0.0267 -0.159)
OKLCH	oklch(59.44% 0.161 260.5)
XYZ	xyz(22.3762, 20.5423, 71.1784)
Luminance	0.2054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BDD #DDA442

analogous

#42C9DD #427BDD #5742DD

triadic

#427BDD #DD427B #7BDD42

tetradic

#427BDD #DD42C9 #DDA442 #42DD57

square

#427BDD #DD42C9 #DDA442 #42DD57

split-complementary

#427BDD #DD5742 #C9DD42

monochromatic

#19438C #225CBF #427BDD #769FE6 #AAC3F0

Accessibility & contrast

On white

4.11

#427BDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#427BDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BDD

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BDD	#FFFFFF	#000000	##000000
##427BDD	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A85E1

Deuteranopia (green-blind)

#2C76DB

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #427bdd;
/* rgb */ color: rgb(66, 123, 221);
/* oklch */ color: oklch(59.4% 0.161 260.5);

Tailwind

colors: {
  custom: {
    50: '#88a0e8',
    500: '#427bdd',
    950: '#000000',
  },
}

SCSS

$custom: #427bdd;
$custom-light: #88a0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#427bdd",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 221
  },
  "hsl": {
    "h": 217.935,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.59437,
    "c": 0.16126,
    "h": 260.5
  },
  "luminance": 0.20545
}

Semantic roles & 50–950 ramp

primary

#427BDD

secondary

#DDC69D

accent

#AB3BEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #427BDD

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

Preview Lab → · Contrast checker → · Palette generator →