#428AC5#428AC5

#428AC5 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.4% C 0.115 H 246.0°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#428AC5
RGB	rgb(66, 138, 197)
HSL	hsl(207, 53%, 52%)
HSV	hsv(207, 66%, 77%)
CMYK	cmyk(66.5%, 29.9%, 0%, 22.7%)
CIE-LAB	lab(55.45, -3.73, -37.24)
CIE-LCH	lch(55.45, 37.43, 264.28°)
OKLab	oklab(61.37% -0.0469 -0.1052)
OKLCH	oklch(61.37% 0.115 246)
XYZ	xyz(21.4095, 23.3642, 56.1939)
Luminance	0.2337 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AC5 #C57D42

analogous

#42C5BF #428AC5 #4249C5

triadic

#428AC5 #C5428A #8AC542

tetradic

#428AC5 #BF42C5 #C57D42 #49C542

square

#428AC5 #BF42C5 #C57D42 #49C542

split-complementary

#428AC5 #C54249 #C5BF42

monochromatic

#214A6C #2F6A9A #428AC5 #71A7D3 #A0C4E2

Accessibility & contrast

On white

3.70

#428AC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#428AC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AC5

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AC5	#FFFFFF	#000000	##000000
##428AC5	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#708CC8

Deuteranopia (green-blind)

#5E7FC4

Tritanopia (blue-blind)

#00989F

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428ac5;
/* rgb */ color: rgb(66, 138, 197);
/* oklch */ color: oklch(61.4% 0.115 246.0);

Tailwind

colors: {
  custom: {
    50: '#84abd7',
    500: '#428ac5',
    950: '#000000',
  },
}

SCSS

$custom: #428ac5;
$custom-light: #84abd7;
$custom-dark: #000000;

JSON

{
  "hex": "#428ac5",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 197
  },
  "hsl": {
    "h": 207.023,
    "s": 53.036,
    "l": 51.569
  },
  "oklch": {
    "l": 0.61365,
    "c": 0.11519,
    "h": 246
  },
  "luminance": 0.23366
}

Semantic roles & 50–950 ramp

primary

#428AC5

secondary

#CEAF95

accent

#8D4BDC

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428AC5

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

Preview Lab → · Contrast checker → · Palette generator →