#428ABD#428ABD

#428ABD is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 61.0% C 0.106 H 242.2°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#428ABD
RGB	rgb(66, 138, 189)
HSL	hsl(205, 48%, 50%)
HSV	hsv(205, 65%, 74%)
CMYK	cmyk(65.1%, 27%, 0%, 25.9%)
CIE-LAB	lab(55.08, -6.44, -33.27)
CIE-LCH	lch(55.08, 33.89, 259.04°)
OKLab	oklab(60.96% -0.0494 -0.0937)
OKLCH	oklch(60.96% 0.106 242.2)
XYZ	xyz(20.5171, 23.0072, 51.4938)
Luminance	0.2301 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428ABD #BD7542

analogous

#42BDB2 #428ABD #424DBD

triadic

#428ABD #BD428A #8ABD42

tetradic

#428ABD #B242BD #BD7542 #4DBD42

square

#428ABD #B242BD #BD7542 #4DBD42

split-complementary

#428ABD #BD424D #BDB242

monochromatic

#224862 #326990 #428ABD #6FA6CD #9DC2DD

Accessibility & contrast

On white

3.75

#428ABD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#428ABD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428ABD

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428ABD	#FFFFFF	#000000	##000000
##428ABD	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#738BBF

Deuteranopia (green-blind)

#627EBC

Tritanopia (blue-blind)

#00979C

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428abd;
/* rgb */ color: rgb(66, 138, 189);
/* oklch */ color: oklch(61.0% 0.106 242.2);

Tailwind

colors: {
  custom: {
    50: '#83acd1',
    500: '#428abd',
    950: '#000000',
  },
}

SCSS

$custom: #428abd;
$custom-light: #83acd1;
$custom-dark: #000000;

JSON

{
  "hex": "#428abd",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 189
  },
  "hsl": {
    "h": 204.878,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.60955,
    "c": 0.10591,
    "h": 242.2
  },
  "luminance": 0.23009
}

Semantic roles & 50–950 ramp

primary

#428ABD

secondary

#C9A992

accent

#8850D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428ABD

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

Preview Lab → · Contrast checker → · Palette generator →