#427DDF#427DDF

#427DDF is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.0% C 0.162 H 260.0°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#427DDF
RGB	rgb(66, 125, 223)
HSL	hsl(217, 71%, 57%)
HSV	hsv(217, 70%, 87%)
CMYK	cmyk(70.4%, 43.9%, 0%, 12.5%)
CIE-LAB	lab(53.11, 13.20, -55.62)
CIE-LCH	lch(53.11, 57.17, 283.35°)
OKLab	oklab(59.99% -0.0281 -0.1592)
OKLCH	oklch(59.99% 0.162 260)
XYZ	xyz(22.8949, 21.1508, 72.6736)
Luminance	0.2115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DDF #DFA442

analogous

#42CCDF #427DDF #5642DF

triadic

#427DDF #DF427D #7DDF42

tetradic

#427DDF #DF42CC #DFA442 #42DF56

square

#427DDF #DF42CC #DFA442 #42DF56

split-complementary

#427DDF #DF5642 #CCDF42

monochromatic

#18458E #215EC3 #427DDF #76A1E8 #ABC5F1

Accessibility & contrast

On white

4.01

#427DDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#427DDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DDF

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DDF	#FFFFFF	#000000	##000000
##427DDF	1.00	4.01	5.23	5.23
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C87E3

Deuteranopia (green-blind)

#2F78DD

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #427ddf;
/* rgb */ color: rgb(66, 125, 223);
/* oklch */ color: oklch(60.0% 0.162 260.0);

Tailwind

colors: {
  custom: {
    50: '#88a2e9',
    500: '#427ddf',
    950: '#000000',
  },
}

SCSS

$custom: #427ddf;
$custom-light: #88a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#427ddf",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 223
  },
  "hsl": {
    "h": 217.452,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59991,
    "c": 0.16162,
    "h": 260
  },
  "luminance": 0.21153
}

Semantic roles & 50–950 ramp

primary

#427DDF

secondary

#DFC69E

accent

#AA3AEE

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #427DDF

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

Preview Lab → · Contrast checker → · Palette generator →