#427FD8#427FD8

#427FD8 is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.0% C 0.150 H 258.0°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#427FD8
RGB	rgb(66, 127, 216)
HSL	hsl(216, 66%, 55%)
HSV	hsv(216, 69%, 85%)
CMYK	cmyk(69.4%, 41.2%, 0%, 15.3%)
CIE-LAB	lab(53.27, 9.47, -51.43)
CIE-LCH	lch(53.27, 52.30, 280.44°)
OKLab	oklab(59.98% -0.0313 -0.1468)
OKLCH	oklch(59.98% 0.15 258)
XYZ	xyz(22.2263, 21.2925, 67.8909)
Luminance	0.2130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FD8 #D89B42

analogous

#42CAD8 #427FD8 #5042D8

triadic

#427FD8 #D8427F #7FD842

tetradic

#427FD8 #D842CA #D89B42 #42D850

square

#427FD8 #D842CA #D89B42 #42D850

split-complementary

#427FD8 #D85042 #CAD842

monochromatic

#1B4684 #2661B7 #427FD8 #75A1E2 #A7C4ED

Accessibility & contrast

On white

3.99

#427FD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#427FD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FD8

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FD8	#FFFFFF	#000000	##000000
##427FD8	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5587DB

Deuteranopia (green-blind)

#3D79D6

Tritanopia (blue-blind)

#0094A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #427fd8;
/* rgb */ color: rgb(66, 127, 216);
/* oklch */ color: oklch(60.0% 0.150 258.0);

Tailwind

colors: {
  custom: {
    50: '#87a3e4',
    500: '#427fd8',
    950: '#000000',
  },
}

SCSS

$custom: #427fd8;
$custom-light: #87a3e4;
$custom-dark: #000000;

JSON

{
  "hex": "#427fd8",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 216
  },
  "hsl": {
    "h": 215.6,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.5998,
    "c": 0.15012,
    "h": 258
  },
  "luminance": 0.21295
}

Semantic roles & 50–950 ramp

primary

#427FD8

secondary

#DAC19C

accent

#A43FE9

background

#F8FAFE

surface

#F0F3FC

border

#CBCDD5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #427FD8

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

Preview Lab → · Contrast checker → · Palette generator →