#428AC3#428AC3

#428AC3 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 61.3% C 0.113 H 245.1°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#428AC3
RGB	rgb(66, 138, 195)
HSL	hsl(207, 52%, 51%)
HSV	hsv(207, 66%, 76%)
CMYK	cmyk(66.2%, 29.2%, 0%, 23.5%)
CIE-LAB	lab(55.35, -4.41, -36.25)
CIE-LCH	lch(55.35, 36.52, 263.06°)
OKLab	oklab(61.26% -0.0475 -0.1023)
OKLCH	oklch(61.26% 0.113 245.1)
XYZ	xyz(21.1819, 23.2732, 54.9950)
Luminance	0.2328 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AC3 #C37B42

analogous

#42C3BB #428AC3 #4249C3

triadic

#428AC3 #C3428A #8AC342

tetradic

#428AC3 #BB42C3 #C37B42 #49C342

square

#428AC3 #BB42C3 #C37B42 #49C342

split-complementary

#428AC3 #C34249 #C3BB42

monochromatic

#214969 #306A98 #428AC3 #70A7D2 #9FC4E0

Accessibility & contrast

On white

3.71

#428AC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#428AC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AC3

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AC3	#FFFFFF	#000000	##000000
##428AC3	1.00	3.71	5.65	5.65
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#718CC6

Deuteranopia (green-blind)

#5F7FC2

Tritanopia (blue-blind)

#00989E

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428ac3;
/* rgb */ color: rgb(66, 138, 195);
/* oklch */ color: oklch(61.3% 0.113 245.1);

Tailwind

colors: {
  custom: {
    50: '#84abd5',
    500: '#428ac3',
    950: '#000000',
  },
}

SCSS

$custom: #428ac3;
$custom-light: #84abd5;
$custom-dark: #000000;

JSON

{
  "hex": "#428ac3",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 195
  },
  "hsl": {
    "h": 206.512,
    "s": 51.807,
    "l": 51.176
  },
  "oklch": {
    "l": 0.61261,
    "c": 0.11282,
    "h": 245.1
  },
  "luminance": 0.23275
}

Semantic roles & 50–950 ramp

primary

#428AC3

secondary

#CDAD94

accent

#8C4DDB

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428AC3

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

Preview Lab → · Contrast checker → · Palette generator →