#427CDF#427CDF

#427CDF is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.8% C 0.163 H 260.4°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#427CDF
RGB	rgb(66, 124, 223)
HSL	hsl(218, 71%, 57%)
HSV	hsv(218, 70%, 87%)
CMYK	cmyk(70.4%, 44.4%, 0%, 12.5%)
CIE-LAB	lab(52.84, 13.81, -56.06)
CIE-LCH	lch(52.84, 57.74, 283.84°)
OKLab	oklab(59.78% -0.0272 -0.1605)
OKLCH	oklch(59.78% 0.163 260.4)
XYZ	xyz(22.7689, 20.8989, 72.6316)
Luminance	0.2090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CDF #DFA542

analogous

#42CBDF #427CDF #5742DF

triadic

#427CDF #DF427C #7CDF42

tetradic

#427CDF #DF42CB #DFA542 #42DF57

square

#427CDF #DF42CB #DFA542 #42DF57

split-complementary

#427CDF #DF5742 #CBDF42

monochromatic

#18448E #215DC3 #427CDF #76A0E8 #ABC5F1

Accessibility & contrast

On white

4.05

#427CDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#427CDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CDF

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CDF	#FFFFFF	#000000	##000000
##427CDF	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A86E3

Deuteranopia (green-blind)

#2C77DD

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427cdf;
/* rgb */ color: rgb(66, 124, 223);
/* oklch */ color: oklch(59.8% 0.163 260.4);

Tailwind

colors: {
  custom: {
    50: '#88a1e9',
    500: '#427cdf',
    950: '#000000',
  },
}

SCSS

$custom: #427cdf;
$custom-light: #88a1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#427cdf",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 223
  },
  "hsl": {
    "h": 217.834,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59778,
    "c": 0.16277,
    "h": 260.4
  },
  "luminance": 0.20901
}

Semantic roles & 50–950 ramp

primary

#427CDF

secondary

#DFC79E

accent

#AB3AEE

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #427CDF

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

Preview Lab → · Contrast checker → · Palette generator →