#427BD5#427BD5

#427BD5 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 58.9% C 0.151 H 259.2°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#427BD5
RGB	rgb(66, 123, 213)
HSL	hsl(217, 64%, 55%)
HSV	hsv(217, 69%, 84%)
CMYK	cmyk(69%, 42.3%, 0%, 16.5%)
CIE-LAB	lab(51.98, 10.86, -51.80)
CIE-LCH	lch(51.98, 52.92, 281.84°)
OKLab	oklab(58.93% -0.0282 -0.1479)
OKLCH	oklch(58.93% 0.151 259.2)
XYZ	xyz(21.3356, 20.1261, 65.6982)
Luminance	0.2013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BD5 #D59C42

analogous

#42C4D5 #427BD5 #5342D5

triadic

#427BD5 #D5427B #7BD542

tetradic

#427BD5 #D542C4 #D59C42 #42D553

square

#427BD5 #D542C4 #D59C42 #42D553

split-complementary

#427BD5 #D55342 #C4D542

monochromatic

#1C4380 #285DB2 #427BD5 #749EE0 #A6C1EB

Accessibility & contrast

On white

4.18

#427BD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#427BD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BD5

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BD5	#FFFFFF	#000000	##000000
##427BD5	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5083D8

Deuteranopia (green-blind)

#3776D3

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #427bd5;
/* rgb */ color: rgb(66, 123, 213);
/* oklch */ color: oklch(58.9% 0.151 259.2);

Tailwind

colors: {
  custom: {
    50: '#87a0e2',
    500: '#427bd5',
    950: '#000000',
  },
}

SCSS

$custom: #427bd5;
$custom-light: #87a0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#427bd5",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 213
  },
  "hsl": {
    "h": 216.735,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58927,
    "c": 0.15061,
    "h": 259.2
  },
  "luminance": 0.20128
}

Semantic roles & 50–950 ramp

primary

#427BD5

secondary

#D8C09A

accent

#A641E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427BD5

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

Preview Lab → · Contrast checker → · Palette generator →