#428DC1#428DC1

#428DC1 is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 61.9% C 0.108 H 241.8°. Best body text is #000000 at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#428DC1
RGB	rgb(66, 141, 193)
HSL	hsl(205, 51%, 51%)
HSV	hsv(205, 66%, 76%)
CMYK	cmyk(65.8%, 26.9%, 0%, 24.3%)
CIE-LAB	lab(56.14, -6.82, -33.88)
CIE-LCH	lch(56.14, 34.56, 258.62°)
OKLab	oklab(61.86% -0.0513 -0.0954)
OKLCH	oklch(61.86% 0.108 241.8)
XYZ	xyz(21.3936, 24.0560, 53.9576)
Luminance	0.2406 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DC1 #C17642

analogous

#42C1B6 #428DC1 #424DC1

triadic

#428DC1 #C1428D #8DC142

tetradic

#428DC1 #B642C1 #C17642 #4DC142

square

#428DC1 #B642C1 #C17642 #4DC142

split-complementary

#428DC1 #C1424D #C1B642

monochromatic

#224B67 #316C95 #428DC1 #70A9D0 #9EC5DF

Accessibility & contrast

On white

3.61

#428DC1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.81

#428DC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DC1

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DC1	#FFFFFF	#000000	##000000
##428DC1	1.00	3.61	5.81	5.81
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.81	21.00	1.00	1.00
##000000	5.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758EC3

Deuteranopia (green-blind)

#6481C0

Tritanopia (blue-blind)

#009A9F

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428dc1;
/* rgb */ color: rgb(66, 141, 193);
/* oklch */ color: oklch(61.9% 0.108 241.8);

Tailwind

colors: {
  custom: {
    50: '#83aed4',
    500: '#428dc1',
    950: '#000000',
  },
}

SCSS

$custom: #428dc1;
$custom-light: #83aed4;
$custom-dark: #000000;

JSON

{
  "hex": "#428dc1",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 193
  },
  "hsl": {
    "h": 204.567,
    "s": 50.598,
    "l": 50.784
  },
  "oklch": {
    "l": 0.61856,
    "c": 0.10832,
    "h": 241.8
  },
  "luminance": 0.24058
}

Semantic roles & 50–950 ramp

primary

#428DC1

secondary

#CCAA93

accent

#874EDA

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428DC1

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

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