#428EBD#428EBD

#428EBD is a mid, moderate cyan. Relative luminance 0.242; OKLCH L 61.9% C 0.103 H 238.7°. Best body text is #000000 at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#428EBD
RGB	rgb(66, 142, 189)
HSL	hsl(203, 48%, 50%)
HSV	hsv(203, 65%, 74%)
CMYK	cmyk(65.1%, 24.9%, 0%, 25.9%)
CIE-LAB	lab(56.26, -8.72, -31.43)
CIE-LCH	lch(56.26, 32.61, 254.49°)
OKLab	oklab(61.89% -0.0536 -0.0883)
OKLCH	oklch(61.89% 0.103 238.7)
XYZ	xyz(21.1016, 24.1762, 51.6886)
Luminance	0.2418 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EBD #BD7142

analogous

#42BDAF #428EBD #4250BD

triadic

#428EBD #BD428E #8EBD42

tetradic

#428EBD #AF42BD #BD7142 #50BD42

square

#428EBD #AF42BD #BD7142 #50BD42

split-complementary

#428EBD #BD4250 #BDAF42

monochromatic

#224A62 #326C90 #428EBD #6FA9CD #9DC4DD

Accessibility & contrast

On white

3.60

#428EBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.84

#428EBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EBD

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EBD	#FFFFFF	#000000	##000000
##428EBD	1.00	3.60	5.84	5.84
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.84	21.00	1.00	1.00
##000000	5.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788EBF

Deuteranopia (green-blind)

#6781BC

Tritanopia (blue-blind)

#009A9E

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428ebd;
/* rgb */ color: rgb(66, 142, 189);
/* oklch */ color: oklch(61.9% 0.103 238.7);

Tailwind

colors: {
  custom: {
    50: '#83afd1',
    500: '#428ebd',
    950: '#000000',
  },
}

SCSS

$custom: #428ebd;
$custom-light: #83afd1;
$custom-dark: #000000;

JSON

{
  "hex": "#428ebd",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 189
  },
  "hsl": {
    "h": 202.927,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.61893,
    "c": 0.10332,
    "h": 238.7
  },
  "luminance": 0.24178
}

Semantic roles & 50–950 ramp

primary

#428EBD

secondary

#C9A792

accent

#8450D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428EBD

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

Preview Lab → · Contrast checker → · Palette generator →