#427DA5#427DA5

#427DA5 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.7% C 0.088 H 240.4°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#427DA5
RGB	rgb(66, 125, 165)
HSL	hsl(204, 43%, 45%)
HSV	hsv(204, 60%, 65%)
CMYK	cmyk(60%, 24.2%, 0%, 35.3%)
CIE-LAB	lab(50.15, -6.92, -27.14)
CIE-LCH	lch(50.15, 28.01, 255.69°)
OKLab	oklab(56.7% -0.0433 -0.0761)
OKLCH	oklch(56.7% 0.088 240.4)
XYZ	xyz(16.3694, 18.5406, 38.3060)
Luminance	0.1854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DA5 #A56A42

analogous

#42A59B #427DA5 #424CA5

triadic

#427DA5 #A5427D #7DA542

tetradic

#427DA5 #9B42A5 #A56A42 #4CA542

square

#427DA5 #9B42A5 #A56A42 #4CA542

split-complementary

#427DA5 #A5424C #A59B42

monochromatic

#1F3B4E #315C79 #427DA5 #639BC1 #8FB7D2

Accessibility & contrast

On white

4.46

#427DA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#427DA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DA5

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DA5	#FFFFFF	#000000	##000000
##427DA5	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7DA7

Deuteranopia (green-blind)

#5E73A4

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #427da5;
/* rgb */ color: rgb(66, 125, 165);
/* oklch */ color: oklch(56.7% 0.088 240.4);

Tailwind

colors: {
  custom: {
    50: '#7fa2c0',
    500: '#427da5',
    950: '#000000',
  },
}

SCSS

$custom: #427da5;
$custom-light: #7fa2c0;
$custom-dark: #000000;

JSON

{
  "hex": "#427da5",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 165
  },
  "hsl": {
    "h": 204.242,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.56702,
    "c": 0.08753,
    "h": 240.4
  },
  "luminance": 0.18542
}

Semantic roles & 50–950 ramp

primary

#427DA5

secondary

#BD9C85

accent

#8855D3

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0B0F12

muted

#7C7E81

Preview Lab

Preview with #427DA5

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

Preview Lab → · Contrast checker → · Palette generator →