#427CDB#427CDB

#427CDB is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.5% C 0.157 H 259.8°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#427CDB
RGB	rgb(66, 124, 219)
HSL	hsl(217, 68%, 56%)
HSV	hsv(217, 70%, 86%)
CMYK	cmyk(69.9%, 43.4%, 0%, 14.1%)
CIE-LAB	lab(52.60, 12.38, -54.19)
CIE-LCH	lch(52.60, 55.58, 282.87°)
OKLab	oklab(59.52% -0.028 -0.1549)
OKLCH	oklch(59.52% 0.157 259.8)
XYZ	xyz(22.2360, 20.6857, 69.8250)
Luminance	0.2069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CDB #DBA142

analogous

#42C8DB #427CDB #5442DB

triadic

#427CDB #DB427C #7CDB42

tetradic

#427CDB #DB42C8 #DBA142 #42DB54

square

#427CDB #DB42C8 #DBA142 #42DB54

split-complementary

#427CDB #DB5442 #C8DB42

monochromatic

#1A4489 #245DBC #427CDB #75A0E5 #A9C3EF

Accessibility & contrast

On white

4.09

#427CDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#427CDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CDB

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CDB	#FFFFFF	#000000	##000000
##427CDB	1.00	4.09	5.14	5.14
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E85DF

Deuteranopia (green-blind)

#3277D9

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427cdb;
/* rgb */ color: rgb(66, 124, 219);
/* oklch */ color: oklch(59.5% 0.157 259.8);

Tailwind

colors: {
  custom: {
    50: '#88a1e7',
    500: '#427cdb',
    950: '#000000',
  },
}

SCSS

$custom: #427cdb;
$custom-light: #88a1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#427cdb",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 219
  },
  "hsl": {
    "h": 217.255,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59521,
    "c": 0.15745,
    "h": 259.8
  },
  "luminance": 0.20688
}

Semantic roles & 50–950 ramp

primary

#427CDB

secondary

#DCC49D

accent

#A93DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #427CDB

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

Preview Lab → · Contrast checker → · Palette generator →