#428BB6#428BB6

#428BB6 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.8% C 0.098 H 237.3°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#428BB6
RGB	rgb(66, 139, 182)
HSL	hsl(202, 47%, 49%)
HSV	hsv(202, 64%, 71%)
CMYK	cmyk(63.7%, 23.6%, 0%, 28.6%)
CIE-LAB	lab(55.07, -9.35, -29.29)
CIE-LCH	lch(55.07, 30.75, 252.31°)
OKLab	oklab(60.85% -0.0528 -0.0822)
OKLCH	oklch(60.85% 0.098 237.3)
XYZ	xyz(19.9196, 22.9989, 47.6364)
Luminance	0.2300 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428BB6 #B66D42

analogous

#42B6A7 #428BB6 #4251B6

triadic

#428BB6 #B6428B #8BB642

tetradic

#428BB6 #A742B6 #B66D42 #51B642

square

#428BB6 #A742B6 #B66D42 #51B642

split-complementary

#428BB6 #B64251 #B6A742

monochromatic

#21465C #326989 #428BB6 #6CA7CA #99C2DA

Accessibility & contrast

On white

3.75

#428BB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#428BB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428BB6

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428BB6	#FFFFFF	#000000	##000000
##428BB6	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)

#778AB8

Deuteranopia (green-blind)

#677FB5

Tritanopia (blue-blind)

#00969A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428bb6;
/* rgb */ color: rgb(66, 139, 182);
/* oklch */ color: oklch(60.8% 0.098 237.3);

Tailwind

colors: {
  custom: {
    50: '#82accc',
    500: '#428bb6',
    950: '#000000',
  },
}

SCSS

$custom: #428bb6;
$custom-light: #82accc;
$custom-dark: #000000;

JSON

{
  "hex": "#428bb6",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 182
  },
  "hsl": {
    "h": 202.241,
    "s": 46.774,
    "l": 48.627
  },
  "oklch": {
    "l": 0.60848,
    "c": 0.09772,
    "h": 237.3
  },
  "luminance": 0.23001
}

Semantic roles & 50–950 ramp

primary

#428BB6

secondary

#C6A38E

accent

#8351D6

background

#F8FAFC

surface

#F0F4F8

border

#CBCED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428BB6

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

Preview Lab → · Contrast checker → · Palette generator →