#427BB8#427BB8

#427BB8 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.2% C 0.112 H 251.8°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#427BB8
RGB	rgb(66, 123, 184)
HSL	hsl(211, 47%, 49%)
HSV	hsv(211, 64%, 72%)
CMYK	cmyk(64.1%, 33.2%, 0%, 27.8%)
CIE-LAB	lab(50.43, 0.67, -37.69)
CIE-LCH	lch(50.43, 37.70, 271.02°)
OKLab	oklab(57.22% -0.0351 -0.1067)
OKLCH	oklch(57.22% 0.112 251.8)
XYZ	xyz(17.9783, 18.7831, 48.0162)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BB8 #B87F42

analogous

#42B6B8 #427BB8 #4442B8

triadic

#427BB8 #B8427B #7BB842

tetradic

#427BB8 #B842B6 #B87F42 #42B844

square

#427BB8 #B842B6 #B87F42 #42B844

split-complementary

#427BB8 #B84442 #B6B842

monochromatic

#223F5E #325D8B #427BB8 #6D9ACB #9AB9DB

Accessibility & contrast

On white

4.41

#427BB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#427BB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BB8

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BB8	#FFFFFF	#000000	##000000
##427BB8	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617EBB

Deuteranopia (green-blind)

#5073B7

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427bb8;
/* rgb */ color: rgb(66, 123, 184);
/* oklch */ color: oklch(57.2% 0.112 251.8);

Tailwind

colors: {
  custom: {
    50: '#82a0cd',
    500: '#427bb8',
    950: '#000000',
  },
}

SCSS

$custom: #427bb8;
$custom-light: #82a0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#427bb8",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 184
  },
  "hsl": {
    "h": 211.017,
    "s": 47.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57218,
    "c": 0.11229,
    "h": 251.8
  },
  "luminance": 0.18785
}

Semantic roles & 50–950 ramp

primary

#427BB8

secondary

#C7AC8F

accent

#9651D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427BB8

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

Preview Lab → · Contrast checker → · Palette generator →