#427DB5#427DB5

#427DB5 is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.5% C 0.107 H 249.1°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#427DB5
RGB	rgb(66, 125, 181)
HSL	hsl(209, 47%, 48%)
HSV	hsv(209, 64%, 71%)
CMYK	cmyk(63.5%, 30.9%, 0%, 29%)
CIE-LAB	lab(50.87, -1.55, -35.27)
CIE-LCH	lch(50.87, 35.31, 267.48°)
OKLab	oklab(57.52% -0.0381 -0.0996)
OKLCH	oklch(57.52% 0.107 249.1)
XYZ	xyz(17.9178, 19.1599, 46.4611)
Luminance	0.1916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DB5 #B57A42

analogous

#42B5B3 #427DB5 #4243B5

triadic

#427DB5 #B5427D #7DB542

tetradic

#427DB5 #B342B5 #B57A42 #43B542

square

#427DB5 #B342B5 #B57A42 #43B542

split-complementary

#427DB5 #B54243 #B5B342

monochromatic

#213F5B #325E88 #427DB5 #6B9BC9 #98BAD9

Accessibility & contrast

On white

4.35

#427DB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#427DB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DB5

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DB5	#FFFFFF	#000000	##000000
##427DB5	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657FB7

Deuteranopia (green-blind)

#5574B4

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427db5;
/* rgb */ color: rgb(66, 125, 181);
/* oklch */ color: oklch(57.5% 0.107 249.1);

Tailwind

colors: {
  custom: {
    50: '#81a2cb',
    500: '#427db5',
    950: '#000000',
  },
}

SCSS

$custom: #427db5;
$custom-light: #81a2cb;
$custom-dark: #000000;

JSON

{
  "hex": "#427db5",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 181
  },
  "hsl": {
    "h": 209.217,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57517,
    "c": 0.10663,
    "h": 249.1
  },
  "luminance": 0.19162
}

Semantic roles & 50–950 ramp

primary

#427DB5

secondary

#C5A98E

accent

#9252D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #427DB5

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

Preview Lab → · Contrast checker → · Palette generator →