#427AB3#427AB3

#427AB3 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.7% C 0.107 H 250.6°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#427AB3
RGB	rgb(66, 122, 179)
HSL	hsl(210, 46%, 48%)
HSV	hsv(210, 63%, 70%)
CMYK	cmyk(63.1%, 31.8%, 0%, 29.8%)
CIE-LAB	lab(49.89, -0.45, -35.65)
CIE-LCH	lch(49.89, 35.66, 269.28°)
OKLab	oklab(56.72% -0.0355 -0.1007)
OKLCH	oklch(56.72% 0.107 250.6)
XYZ	xyz(17.3400, 18.3303, 45.2634)
Luminance	0.1833 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427AB3 #B37B42

analogous

#42B2B3 #427AB3 #4242B3

triadic

#427AB3 #B3427A #7AB342

tetradic

#427AB3 #B342B2 #B37B42 #42B342

square

#427AB3 #B342B2 #B37B42 #42B342

split-complementary

#427AB3 #B34242 #B2B342

monochromatic

#213D5A #325C86 #427AB3 #6A99C8 #97B7D9

Accessibility & contrast

On white

4.50

#427AB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#427AB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427AB3

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427AB3	#FFFFFF	#000000	##000000
##427AB3	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617DB5

Deuteranopia (green-blind)

#5272B2

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #427ab3;
/* rgb */ color: rgb(66, 122, 179);
/* oklch */ color: oklch(56.7% 0.107 250.6);

Tailwind

colors: {
  custom: {
    50: '#81a0ca',
    500: '#427ab3',
    950: '#000000',
  },
}

SCSS

$custom: #427ab3;
$custom-light: #81a0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#427ab3",
  "rgb": {
    "r": 66,
    "g": 122,
    "b": 179
  },
  "hsl": {
    "h": 210.265,
    "s": 46.122,
    "l": 48.039
  },
  "oklch": {
    "l": 0.56716,
    "c": 0.10679,
    "h": 250.6
  },
  "luminance": 0.18332
}

Semantic roles & 50–950 ramp

primary

#427AB3

secondary

#C4A98C

accent

#9452D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427AB3

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

Preview Lab → · Contrast checker → · Palette generator →