#428AB1#428AB1

#428AB1 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.4% C 0.093 H 234.9°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#428AB1
RGB	rgb(66, 138, 177)
HSL	hsl(201, 46%, 48%)
HSV	hsv(201, 63%, 69%)
CMYK	cmyk(62.7%, 22%, 0%, 30.6%)
CIE-LAB	lab(54.56, -10.42, -27.22)
CIE-LCH	lch(54.56, 29.15, 249.05°)
OKLab	oklab(60.37% -0.0535 -0.0762)
OKLCH	oklch(60.37% 0.093 234.9)
XYZ	xyz(19.2680, 22.5076, 44.9154)
Luminance	0.2251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AB1 #B16942

analogous

#42B1A0 #428AB1 #4253B1

triadic

#428AB1 #B1428A #8AB142

tetradic

#428AB1 #A042B1 #B16942 #53B142

square

#428AB1 #A042B1 #B16942 #53B142

split-complementary

#428AB1 #B14253 #B1A042

monochromatic

#214458 #316784 #428AB1 #69A6C7 #96C1D8

Accessibility & contrast

On white

3.82

#428AB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#428AB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AB1

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AB1	#FFFFFF	#000000	##000000
##428AB1	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7789B3

Deuteranopia (green-blind)

#687EB0

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428ab1;
/* rgb */ color: rgb(66, 138, 177);
/* oklch */ color: oklch(60.4% 0.093 234.9);

Tailwind

colors: {
  custom: {
    50: '#81acc8',
    500: '#428ab1',
    950: '#000000',
  },
}

SCSS

$custom: #428ab1;
$custom-light: #81acc8;
$custom-dark: #000000;

JSON

{
  "hex": "#428ab1",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 177
  },
  "hsl": {
    "h": 201.081,
    "s": 45.679,
    "l": 47.647
  },
  "oklch": {
    "l": 0.60374,
    "c": 0.09316,
    "h": 234.9
  },
  "luminance": 0.2251
}

Semantic roles & 50–950 ramp

primary

#428AB1

secondary

#C39F8B

accent

#8052D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428AB1

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

Preview Lab → · Contrast checker → · Palette generator →