#428BAF#428BAF

#428BAF is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.5% C 0.091 H 232.4°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#428BAF
RGB	rgb(66, 139, 175)
HSL	hsl(200, 45%, 47%)
HSV	hsv(200, 62%, 69%)
CMYK	cmyk(62.3%, 20.6%, 0%, 31.4%)
CIE-LAB	lab(54.78, -11.63, -25.74)
CIE-LCH	lch(54.78, 28.25, 245.68°)
OKLab	oklab(60.52% -0.0553 -0.072)
OKLCH	oklch(60.52% 0.091 232.4)
XYZ	xyz(19.2143, 22.7167, 43.9213)
Luminance	0.2272 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428BAF #AF6642

analogous

#42AF9D #428BAF #4254AF

triadic

#428BAF #AF428B #8BAF42

tetradic

#428BAF #9D42AF #AF6642 #54AF42

square

#428BAF #9D42AF #AF6642 #54AF42

split-complementary

#428BAF #AF4254 #AF9D42

monochromatic

#204456 #316883 #428BAF #68A7C6 #95C1D7

Accessibility & contrast

On white

3.79

#428BAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#428BAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428BAF

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428BAF	#FFFFFF	#000000	##000000
##428BAF	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7989B1

Deuteranopia (green-blind)

#6A7EAE

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428baf;
/* rgb */ color: rgb(66, 139, 175);
/* oklch */ color: oklch(60.5% 0.091 232.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#428baf",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 175
  },
  "hsl": {
    "h": 199.817,
    "s": 45.228,
    "l": 47.255
  },
  "oklch": {
    "l": 0.6052,
    "c": 0.0908,
    "h": 232.4
  },
  "luminance": 0.22719
}

Semantic roles & 50–950 ramp

primary

#428BAF

secondary

#C29D8A

accent

#7E53D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428BAF

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

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