#428DB7#428DB7

#428DB7 is a mid, moderate cyan. Relative luminance 0.236; OKLCH L 61.4% C 0.098 H 236.0°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#428DB7
RGB	rgb(66, 141, 183)
HSL	hsl(202, 47%, 49%)
HSV	hsv(202, 64%, 72%)
CMYK	cmyk(63.9%, 23%, 0%, 28.2%)
CIE-LAB	lab(55.71, -10.14, -28.87)
CIE-LCH	lch(55.71, 30.60, 250.64°)
OKLab	oklab(61.37% -0.0546 -0.081)
OKLCH	oklch(61.37% 0.098 236)
XYZ	xyz(20.3156, 23.6248, 48.2800)
Luminance	0.2363 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DB7 #B76C42

analogous

#42B7A7 #428DB7 #4253B7

triadic

#428DB7 #B7428D #8DB742

tetradic

#428DB7 #A742B7 #B76C42 #53B742

square

#428DB7 #A742B7 #B76C42 #53B742

split-complementary

#428DB7 #B74253 #B7A742

monochromatic

#22485D #326A8A #428DB7 #6CA8CA #99C3DA

Accessibility & contrast

On white

3.67

#428DB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#428DB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DB7

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DB7	#FFFFFF	#000000	##000000
##428DB7	1.00	3.67	5.73	5.73
#FFFFFF	3.67	1.00	21.00	21.00
#000000	5.73	21.00	1.00	1.00
##000000	5.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798CB9

Deuteranopia (green-blind)

#6980B6

Tritanopia (blue-blind)

#00989B

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428db7;
/* rgb */ color: rgb(66, 141, 183);
/* oklch */ color: oklch(61.4% 0.098 236.0);

Tailwind

colors: {
  custom: {
    50: '#82aecc',
    500: '#428db7',
    950: '#000000',
  },
}

SCSS

$custom: #428db7;
$custom-light: #82aecc;
$custom-dark: #000000;

JSON

{
  "hex": "#428db7",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 183
  },
  "hsl": {
    "h": 201.538,
    "s": 46.988,
    "l": 48.824
  },
  "oklch": {
    "l": 0.61369,
    "c": 0.09768,
    "h": 236
  },
  "luminance": 0.23627
}

Semantic roles & 50–950 ramp

primary

#428DB7

secondary

#C6A38F

accent

#8151D7

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428DB7

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

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