#428ABA#428ABA

#428ABA is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.8% C 0.103 H 240.6°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#428ABA
RGB	rgb(66, 138, 186)
HSL	hsl(204, 48%, 49%)
HSV	hsv(204, 65%, 73%)
CMYK	cmyk(64.5%, 25.8%, 0%, 27.1%)
CIE-LAB	lab(54.95, -7.45, -31.77)
CIE-LCH	lch(54.95, 32.63, 256.81°)
OKLab	oklab(60.81% -0.0504 -0.0893)
OKLCH	oklch(60.81% 0.103 240.6)
XYZ	xyz(20.1948, 22.8783, 49.7965)
Luminance	0.2288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428ABA #BA7242

analogous

#42BAAE #428ABA #424EBA

triadic

#428ABA #BA428A #8ABA42

tetradic

#428ABA #AE42BA #BA7242 #4EBA42

square

#428ABA #AE42BA #BA7242 #4EBA42

split-complementary

#428ABA #BA424E #BAAE42

monochromatic

#224760 #32688D #428ABA #6EA6CB #9BC2DB

Accessibility & contrast

On white

3.77

#428ABA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#428ABA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428ABA

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428ABA	#FFFFFF	#000000	##000000
##428ABA	1.00	3.77	5.58	5.58
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748ABC

Deuteranopia (green-blind)

#647EB9

Tritanopia (blue-blind)

#00969A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428aba;
/* rgb */ color: rgb(66, 138, 186);
/* oklch */ color: oklch(60.8% 0.103 240.6);

Tailwind

colors: {
  custom: {
    50: '#82accf',
    500: '#428aba',
    950: '#000000',
  },
}

SCSS

$custom: #428aba;
$custom-light: #82accf;
$custom-dark: #000000;

JSON

{
  "hex": "#428aba",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 186
  },
  "hsl": {
    "h": 204,
    "s": 47.619,
    "l": 49.412
  },
  "oklch": {
    "l": 0.60806,
    "c": 0.10258,
    "h": 240.6
  },
  "luminance": 0.2288
}

Semantic roles & 50–950 ramp

primary

#428ABA

secondary

#C8A690

accent

#8651D7

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1013

muted

#7D7F82

Preview Lab

Preview with #428ABA

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

Preview Lab → · Contrast checker → · Palette generator →