#427FA5#427FA5

#427FA5 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.2% C 0.086 H 238.2°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#427FA5
RGB	rgb(66, 127, 165)
HSL	hsl(203, 43%, 45%)
HSV	hsv(203, 60%, 65%)
CMYK	cmyk(60%, 23%, 0%, 35.3%)
CIE-LAB	lab(50.75, -8.08, -26.21)
CIE-LCH	lch(50.75, 27.43, 252.87°)
OKLab	oklab(57.18% -0.0455 -0.0734)
OKLCH	oklch(57.18% 0.086 238.2)
XYZ	xyz(16.6251, 19.0520, 38.3913)
Luminance	0.1905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FA5 #A56842

analogous

#42A599 #427FA5 #424EA5

triadic

#427FA5 #A5427F #7FA542

tetradic

#427FA5 #9942A5 #A56842 #4EA542

square

#427FA5 #9942A5 #A56842 #4EA542

split-complementary

#427FA5 #A5424E #A59942

monochromatic

#1F3C4E #315D79 #427FA5 #639DC1 #8FB8D2

Accessibility & contrast

On white

4.37

#427FA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#427FA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FA5

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FA5	#FFFFFF	#000000	##000000
##427FA5	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7FA7

Deuteranopia (green-blind)

#6074A4

Tritanopia (blue-blind)

#00898C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427fa5;
/* rgb */ color: rgb(66, 127, 165);
/* oklch */ color: oklch(57.2% 0.086 238.2);

Tailwind

colors: {
  custom: {
    50: '#7fa4bf',
    500: '#427fa5',
    950: '#000000',
  },
}

SCSS

$custom: #427fa5;
$custom-light: #7fa4bf;
$custom-dark: #000000;

JSON

{
  "hex": "#427fa5",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 165
  },
  "hsl": {
    "h": 203.03,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.5718,
    "c": 0.08637,
    "h": 238.2
  },
  "luminance": 0.19054
}

Semantic roles & 50–950 ramp

primary

#427FA5

secondary

#BD9B85

accent

#8555D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B0F12

muted

#7C7F81

Preview Lab

Preview with #427FA5

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

Preview Lab → · Contrast checker → · Palette generator →