#427BCC#427BCC

#427BCC is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.4% C 0.139 H 257.5°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#427BCC
RGB	rgb(66, 123, 204)
HSL	hsl(215, 58%, 53%)
HSV	hsv(215, 68%, 80%)
CMYK	cmyk(67.6%, 39.7%, 0%, 20%)
CIE-LAB	lab(51.48, 7.66, -47.49)
CIE-LCH	lch(51.48, 48.11, 279.17°)
OKLab	oklab(58.37% -0.0301 -0.1353)
OKLCH	oklch(58.37% 0.139 257.5)
XYZ	xyz(20.2249, 19.6817, 59.8481)
Luminance	0.1968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BCC #CC9342

analogous

#42C0CC #427BCC #4E42CC

triadic

#427BCC #CC427B #7BCC42

tetradic

#427BCC #CC42C0 #CC9342 #42CC4E

square

#427BCC #CC42C0 #CC9342 #42CC4E

split-complementary

#427BCC #CC4E42 #C0CC42

monochromatic

#1F4274 #2C5EA4 #427BCC #729DD9 #A2BEE6

Accessibility & contrast

On white

4.25

#427BCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#427BCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BCC

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BCC	#FFFFFF	#000000	##000000
##427BCC	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5682CF

Deuteranopia (green-blind)

#4175CA

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427bcc;
/* rgb */ color: rgb(66, 123, 204);
/* oklch */ color: oklch(58.4% 0.139 257.5);

Tailwind

colors: {
  custom: {
    50: '#85a0dc',
    500: '#427bcc',
    950: '#000000',
  },
}

SCSS

$custom: #427bcc;
$custom-light: #85a0dc;
$custom-dark: #000000;

JSON

{
  "hex": "#427bcc",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 204
  },
  "hsl": {
    "h": 215.217,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58373,
    "c": 0.13861,
    "h": 257.5
  },
  "luminance": 0.19684
}

Semantic roles & 50–950 ramp

primary

#427BCC

secondary

#D3BA97

accent

#A147E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427BCC

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

Preview Lab → · Contrast checker → · Palette generator →