#427BB0#427BB0

#427BB0 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.8% C 0.102 H 248.5°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#427BB0
RGB	rgb(66, 123, 176)
HSL	hsl(209, 45%, 47%)
HSV	hsv(209, 63%, 69%)
CMYK	cmyk(62.5%, 30.1%, 0%, 31%)
CIE-LAB	lab(50.05, -2.07, -33.68)
CIE-LCH	lch(50.05, 33.74, 266.49°)
OKLab	oklab(56.79% -0.0374 -0.095)
OKLCH	oklch(56.79% 0.102 248.5)
XYZ	xyz(17.1633, 18.4571, 43.7240)
Luminance	0.1846 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BB0 #B07742

analogous

#42B0AE #427BB0 #4244B0

triadic

#427BB0 #B0427B #7BB042

tetradic

#427BB0 #AE42B0 #B07742 #44B042

square

#427BB0 #AE42B0 #B07742 #44B042

split-complementary

#427BB0 #B04244 #B0AE42

monochromatic

#213D57 #315C83 #427BB0 #6999C7 #95B7D7

Accessibility & contrast

On white

4.48

#427BB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#427BB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BB0

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BB0	#FFFFFF	#000000	##000000
##427BB0	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647DB2

Deuteranopia (green-blind)

#5572AF

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #427bb0;
/* rgb */ color: rgb(66, 123, 176);
/* oklch */ color: oklch(56.8% 0.102 248.5);

Tailwind

colors: {
  custom: {
    50: '#80a1c8',
    500: '#427bb0',
    950: '#000000',
  },
}

SCSS

$custom: #427bb0;
$custom-light: #80a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#427bb0",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 176
  },
  "hsl": {
    "h": 208.909,
    "s": 45.455,
    "l": 47.451
  },
  "oklch": {
    "l": 0.56788,
    "c": 0.10211,
    "h": 248.5
  },
  "luminance": 0.18459
}

Semantic roles & 50–950 ramp

primary

#427BB0

secondary

#C3A68B

accent

#9253D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427BB0

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

Preview Lab → · Contrast checker → · Palette generator →