#428EE5#428EE5

#428EE5 is a light, vivid cyan. Relative luminance 0.262; OKLCH L 64.0% C 0.151 H 253.8°. Best body text is #000000 at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#428EE5
RGB	rgb(66, 142, 229)
HSL	hsl(212, 76%, 58%)
HSV	hsv(212, 71%, 90%)
CMYK	cmyk(71.2%, 38%, 0%, 10.2%)
CIE-LAB	lab(58.19, 5.04, -50.88)
CIE-LCH	lch(58.19, 51.13, 275.66°)
OKLab	oklab(64.04% -0.0422 -0.145)
OKLCH	oklch(64.04% 0.151 253.8)
XYZ	xyz(26.0574, 26.1585, 77.7894)
Luminance	0.2616 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EE5 #E59942

analogous

#42DFE5 #428EE5 #4842E5

triadic

#428EE5 #E5428E #8EE542

tetradic

#428EE5 #E542DF #E59942 #42E548

square

#428EE5 #E542DF #E59942 #42E548

split-complementary

#428EE5 #E54842 #DFE542

monochromatic

#155298 #1C6FCE #428EE5 #78AEEC #AECEF4

Accessibility & contrast

On white

3.37

#428EE5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.23

#428EE5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EE5

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EE5	#FFFFFF	#000000	##000000
##428EE5	1.00	3.37	6.23	6.23
#FFFFFF	3.37	1.00	21.00	21.00
#000000	6.23	21.00	1.00	1.00
##000000	6.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6694E9

Deuteranopia (green-blind)

#4D85E3

Tritanopia (blue-blind)

#00A2AE

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #428ee5;
/* rgb */ color: rgb(66, 142, 229);
/* oklch */ color: oklch(64.0% 0.151 253.8);

Tailwind

colors: {
  custom: {
    50: '#89aeed',
    500: '#428ee5',
    950: '#000000',
  },
}

SCSS

$custom: #428ee5;
$custom-light: #89aeed;
$custom-dark: #000000;

JSON

{
  "hex": "#428ee5",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 229
  },
  "hsl": {
    "h": 212.025,
    "s": 75.814,
    "l": 57.843
  },
  "oklch": {
    "l": 0.64036,
    "c": 0.151,
    "h": 253.8
  },
  "luminance": 0.26161
}

Semantic roles & 50–950 ramp

primary

#428EE5

secondary

#E2C4A1

accent

#9A35F2

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428EE5

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

Preview Lab → · Contrast checker → · Palette generator →