#427EA5#427EA5

#427EA5 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 56.9% C 0.087 H 239.3°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#427EA5
RGB	rgb(66, 126, 165)
HSL	hsl(204, 43%, 45%)
HSV	hsv(204, 60%, 65%)
CMYK	cmyk(60%, 23.6%, 0%, 35.3%)
CIE-LAB	lab(50.45, -7.50, -26.68)
CIE-LCH	lch(50.45, 27.71, 254.29°)
OKLab	oklab(56.94% -0.0444 -0.0747)
OKLCH	oklch(56.94% 0.087 239.3)
XYZ	xyz(16.4966, 18.7950, 38.3485)
Luminance	0.1880 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427EA5 #A56942

analogous

#42A59A #427EA5 #424DA5

triadic

#427EA5 #A5427E #7EA542

tetradic

#427EA5 #9A42A5 #A56942 #4DA542

square

#427EA5 #9A42A5 #A56942 #4DA542

split-complementary

#427EA5 #A5424D #A59A42

monochromatic

#1F3B4E #315D79 #427EA5 #639CC1 #8FB8D2

Accessibility & contrast

On white

4.41

#427EA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#427EA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427EA5

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427EA5	#FFFFFF	#000000	##000000
##427EA5	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)

#6C7EA7

Deuteranopia (green-blind)

#5F74A4

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427ea5;
/* rgb */ color: rgb(66, 126, 165);
/* oklch */ color: oklch(56.9% 0.087 239.3);

Tailwind

colors: {
  custom: {
    50: '#7fa3c0',
    500: '#427ea5',
    950: '#000000',
  },
}

SCSS

$custom: #427ea5;
$custom-light: #7fa3c0;
$custom-dark: #000000;

JSON

{
  "hex": "#427ea5",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 165
  },
  "hsl": {
    "h": 203.636,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.56941,
    "c": 0.08693,
    "h": 239.3
  },
  "luminance": 0.18797
}

Semantic roles & 50–950 ramp

primary

#427EA5

secondary

#BD9B85

accent

#8755D3

background

#F8FAFB

surface

#EFF3F7

border

#CACDD0

text

#0B0F12

muted

#7C7F81

Preview Lab

Preview with #427EA5

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

Preview Lab → · Contrast checker → · Palette generator →