#427BD0#427BD0

#427BD0 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.6% C 0.144 H 258.3°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#427BD0
RGB	rgb(66, 123, 208)
HSL	hsl(216, 60%, 54%)
HSV	hsv(216, 68%, 82%)
CMYK	cmyk(68.3%, 40.9%, 0%, 18.4%)
CIE-LAB	lab(51.70, 9.08, -49.41)
CIE-LCH	lch(51.70, 50.24, 280.41°)
OKLab	oklab(58.62% -0.0292 -0.1409)
OKLCH	oklch(58.62% 0.144 258.3)
XYZ	xyz(20.7108, 19.8761, 62.4073)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BD0 #D09742

analogous

#42C2D0 #427BD0 #5042D0

triadic

#427BD0 #D0427B #7BD042

tetradic

#427BD0 #D042C2 #D09742 #42D050

square

#427BD0 #D042C2 #D09742 #42D050

split-complementary

#427BD0 #D05042 #C2D042

monochromatic

#1E4379 #2A5EAA #427BD0 #739DDC #A4BFE8

Accessibility & contrast

On white

4.22

#427BD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#427BD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BD0

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BD0	#FFFFFF	#000000	##000000
##427BD0	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5382D3

Deuteranopia (green-blind)

#3D75CE

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427bd0;
/* rgb */ color: rgb(66, 123, 208);
/* oklch */ color: oklch(58.6% 0.144 258.3);

Tailwind

colors: {
  custom: {
    50: '#86a0df',
    500: '#427bd0',
    950: '#000000',
  },
}

SCSS

$custom: #427bd0;
$custom-light: #86a0df;
$custom-dark: #000000;

JSON

{
  "hex": "#427bd0",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 208
  },
  "hsl": {
    "h": 215.915,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58616,
    "c": 0.14394,
    "h": 258.3
  },
  "luminance": 0.19878
}

Semantic roles & 50–950 ramp

primary

#427BD0

secondary

#D5BD99

accent

#A444E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427BD0

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

Preview Lab → · Contrast checker → · Palette generator →