#42789C#42789C

#42789C is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.1% C 0.080 H 239.6°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#42789C
RGB	rgb(66, 120, 156)
HSL	hsl(204, 41%, 44%)
HSV	hsv(204, 58%, 61%)
CMYK	cmyk(57.7%, 23.1%, 0%, 38.8%)
CIE-LAB	lab(48.25, -6.96, -24.83)
CIE-LCH	lch(48.25, 25.79, 254.35°)
OKLab	oklab(55.07% -0.0407 -0.0694)
OKLCH	oklch(55.07% 0.08 239.6)
XYZ	xyz(14.9618, 16.9902, 33.9370)
Luminance	0.1699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42789C #9C6642

analogous

#429C93 #42789C #424B9C

triadic

#42789C #9C4278 #789C42

tetradic

#42789C #93429C #9C6642 #4B9C42

square

#42789C #93429C #9C6642 #4B9C42

split-complementary

#42789C #9C424B #9C9342

monochromatic

#1E3646 #305771 #42789C #6097BC #8BB3CE

Accessibility & contrast

On white

4.77

#42789C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#42789C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42789C

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42789C	#FFFFFF	#000000	##FFFFFF
##42789C	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#68789E

Deuteranopia (green-blind)

#5C6E9B

Tritanopia (blue-blind)

#008184

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #42789c;
/* rgb */ color: rgb(66, 120, 156);
/* oklch */ color: oklch(55.1% 0.080 239.6);

Tailwind

colors: {
  custom: {
    50: '#7e9eb9',
    500: '#42789c',
    950: '#000000',
  },
}

SCSS

$custom: #42789c;
$custom-light: #7e9eb9;
$custom-dark: #000000;

JSON

{
  "hex": "#42789c",
  "rgb": {
    "r": 66,
    "g": 120,
    "b": 156
  },
  "hsl": {
    "h": 204,
    "s": 40.541,
    "l": 43.529
  },
  "oklch": {
    "l": 0.55072,
    "c": 0.08048,
    "h": 239.6
  },
  "luminance": 0.16991
}

Semantic roles & 50–950 ramp

primary

#42789C

secondary

#B99781

accent

#8857D0

background

#F8F9FB

surface

#EFF2F6

border

#CACCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #42789C

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

Preview Lab → · Contrast checker → · Palette generator →