#427FA4#427FA4

#427FA4 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.1% C 0.085 H 237.4°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#427FA4
RGB	rgb(66, 127, 164)
HSL	hsl(203, 43%, 45%)
HSV	hsv(203, 60%, 64%)
CMYK	cmyk(59.8%, 22.6%, 0%, 35.7%)
CIE-LAB	lab(50.71, -8.41, -25.70)
CIE-LCH	lch(50.71, 27.04, 251.88°)
OKLab	oklab(57.13% -0.0459 -0.0719)
OKLCH	oklch(57.13% 0.085 237.4)
XYZ	xyz(16.5345, 19.0158, 37.9138)
Luminance	0.1902 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FA4 #A46742

analogous

#42A498 #427FA4 #424EA4

triadic

#427FA4 #A4427F #7FA442

tetradic

#427FA4 #9842A4 #A46742 #4EA442

square

#427FA4 #9842A4 #A46742 #4EA442

split-complementary

#427FA4 #A4424E #A49842

monochromatic

#1F3B4D #305D78 #427FA4 #639DC0 #8FB8D2

Accessibility & contrast

On white

4.37

#427FA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#427FA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FA4

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FA4	#FFFFFF	#000000	##000000
##427FA4	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7EA6

Deuteranopia (green-blind)

#6074A3

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427fa4;
/* rgb */ color: rgb(66, 127, 164);
/* oklch */ color: oklch(57.1% 0.085 237.4);

Tailwind

colors: {
  custom: {
    50: '#7fa4bf',
    500: '#427fa4',
    950: '#000000',
  },
}

SCSS

$custom: #427fa4;
$custom-light: #7fa4bf;
$custom-dark: #000000;

JSON

{
  "hex": "#427fa4",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 164
  },
  "hsl": {
    "h": 202.653,
    "s": 42.609,
    "l": 45.098
  },
  "oklch": {
    "l": 0.57132,
    "c": 0.08531,
    "h": 237.4
  },
  "luminance": 0.19017
}

Semantic roles & 50–950 ramp

primary

#427FA4

secondary

#BD9A85

accent

#8555D2

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B0F12

muted

#7C7F81

Preview Lab

Preview with #427FA4

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

Preview Lab → · Contrast checker → · Palette generator →