#428ABE#428ABE

#428ABE is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 61.0% C 0.107 H 242.7°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#428ABE
RGB	rgb(66, 138, 190)
HSL	hsl(205, 49%, 50%)
HSV	hsv(205, 65%, 75%)
CMYK	cmyk(65.3%, 27.4%, 0%, 25.5%)
CIE-LAB	lab(55.12, -6.11, -33.77)
CIE-LCH	lch(55.12, 34.32, 259.75°)
OKLab	oklab(61.01% -0.0491 -0.0951)
OKLCH	oklch(61.01% 0.107 242.7)
XYZ	xyz(20.6260, 23.0508, 52.0675)
Luminance	0.2305 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428ABE #BE7642

analogous

#42BEB4 #428ABE #424CBE

triadic

#428ABE #BE428A #8ABE42

tetradic

#428ABE #B442BE #BE7642 #4CBE42

square

#428ABE #B442BE #BE7642 #4CBE42

split-complementary

#428ABE #BE424C #BEB442

monochromatic

#224863 #326991 #428ABE #70A6CE #9DC2DD

Accessibility & contrast

On white

3.74

#428ABE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#428ABE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428ABE

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428ABE	#FFFFFF	#000000	##000000
##428ABE	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#738BC0

Deuteranopia (green-blind)

#627FBD

Tritanopia (blue-blind)

#00979C

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428abe;
/* rgb */ color: rgb(66, 138, 190);
/* oklch */ color: oklch(61.0% 0.107 242.7);

Tailwind

colors: {
  custom: {
    50: '#83acd2',
    500: '#428abe',
    950: '#000000',
  },
}

SCSS

$custom: #428abe;
$custom-light: #83acd2;
$custom-dark: #000000;

JSON

{
  "hex": "#428abe",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 190
  },
  "hsl": {
    "h": 205.161,
    "s": 48.819,
    "l": 50.196
  },
  "oklch": {
    "l": 0.61006,
    "c": 0.10705,
    "h": 242.7
  },
  "luminance": 0.23053
}

Semantic roles & 50–950 ramp

primary

#428ABE

secondary

#CAA992

accent

#894FD8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428ABE

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

Preview Lab → · Contrast checker → · Palette generator →