#428AB0#428AB0

#428AB0 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.3% C 0.092 H 234.2°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#428AB0
RGB	rgb(66, 138, 176)
HSL	hsl(201, 45%, 47%)
HSV	hsv(201, 63%, 69%)
CMYK	cmyk(62.5%, 21.6%, 0%, 31%)
CIE-LAB	lab(54.52, -10.75, -26.72)
CIE-LCH	lch(54.52, 28.80, 248.08°)
OKLab	oklab(60.33% -0.0539 -0.0748)
OKLCH	oklch(60.33% 0.092 234.2)
XYZ	xyz(19.1687, 22.4679, 44.3924)
Luminance	0.2247 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AB0 #B06842

analogous

#42B09F #428AB0 #4253B0

triadic

#428AB0 #B0428A #8AB042

tetradic

#428AB0 #9F42B0 #B06842 #53B042

square

#428AB0 #9F42B0 #B06842 #53B042

split-complementary

#428AB0 #B04253 #B09F42

monochromatic

#214457 #316783 #428AB0 #69A6C7 #95C0D7

Accessibility & contrast

On white

3.82

#428AB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#428AB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AB0

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AB0	#FFFFFF	#000000	##000000
##428AB0	1.00	3.82	5.49	5.49
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7889B2

Deuteranopia (green-blind)

#687DAF

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #428ab0;
/* rgb */ color: rgb(66, 138, 176);
/* oklch */ color: oklch(60.3% 0.092 234.2);

Tailwind

colors: {
  custom: {
    50: '#81acc7',
    500: '#428ab0',
    950: '#000000',
  },
}

SCSS

$custom: #428ab0;
$custom-light: #81acc7;
$custom-dark: #000000;

JSON

{
  "hex": "#428ab0",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 176
  },
  "hsl": {
    "h": 200.727,
    "s": 45.455,
    "l": 47.451
  },
  "oklch": {
    "l": 0.60327,
    "c": 0.09218,
    "h": 234.2
  },
  "luminance": 0.2247
}

Semantic roles & 50–950 ramp

primary

#428AB0

secondary

#C39E8B

accent

#8053D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428AB0

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

Preview Lab → · Contrast checker → · Palette generator →