#427DD8#427DD8

#427DD8 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.5% C 0.152 H 258.9°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#427DD8
RGB	rgb(66, 125, 216)
HSL	hsl(216, 66%, 55%)
HSV	hsv(216, 69%, 85%)
CMYK	cmyk(69.4%, 42.1%, 0%, 15.3%)
CIE-LAB	lab(52.71, 10.70, -52.33)
CIE-LCH	lch(52.71, 53.41, 281.56°)
OKLab	oklab(59.55% -0.0294 -0.1495)
OKLCH	oklch(59.55% 0.152 258.9)
XYZ	xyz(21.9706, 20.7811, 67.8057)
Luminance	0.2078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DD8 #D89D42

analogous

#42C8D8 #427DD8 #5242D8

triadic

#427DD8 #D8427D #7DD842

tetradic

#427DD8 #D842C8 #D89D42 #42D852

square

#427DD8 #D842C8 #D89D42 #42D852

split-complementary

#427DD8 #D85242 #C8D842

monochromatic

#1B4584 #265FB7 #427DD8 #75A0E2 #A7C3ED

Accessibility & contrast

On white

4.07

#427DD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#427DD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DD8

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DD8	#FFFFFF	#000000	##000000
##427DD8	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5285DC

Deuteranopia (green-blind)

#3877D6

Tritanopia (blue-blind)

#0092A0

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427dd8;
/* rgb */ color: rgb(66, 125, 216);
/* oklch */ color: oklch(59.5% 0.152 258.9);

Tailwind

colors: {
  custom: {
    50: '#87a2e4',
    500: '#427dd8',
    950: '#000000',
  },
}

SCSS

$custom: #427dd8;
$custom-light: #87a2e4;
$custom-dark: #000000;

JSON

{
  "hex": "#427dd8",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 216
  },
  "hsl": {
    "h": 216.4,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.59547,
    "c": 0.15234,
    "h": 258.9
  },
  "luminance": 0.20783
}

Semantic roles & 50–950 ramp

primary

#427DD8

secondary

#DAC29C

accent

#A63FE9

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0F16

muted

#7D7E84

Preview Lab

Preview with #427DD8

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

Preview Lab → · Contrast checker → · Palette generator →