#42839E#42839E

#42839E is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 57.8% C 0.078 H 227.6°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#42839E
RGB	rgb(66, 131, 158)
HSL	hsl(198, 41%, 44%)
HSV	hsv(198, 58%, 62%)
CMYK	cmyk(58.2%, 17.1%, 0%, 38%)
CIE-LAB	lab(51.68, -12.60, -20.71)
CIE-LCH	lch(51.68, 24.25, 238.68°)
OKLab	oklab(57.82% -0.0527 -0.0577)
OKLCH	oklch(57.82% 0.078 227.6)
XYZ	xyz(16.5322, 19.8579, 35.3029)
Luminance	0.1986 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42839E #9E5D42

analogous

#429E8B #42839E #42559E

triadic

#42839E #9E4283 #839E42

tetradic

#42839E #8B429E #9E5D42 #559E42

square

#42839E #8B429E #9E5D42 #559E42

split-complementary

#42839E #9E4255 #9E8B42

monochromatic

#1E3B48 #305F73 #42839E #60A2BD #8CBBCF

Accessibility & contrast

On white

4.22

#42839E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#42839E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #42839E

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42839E	#FFFFFF	#000000	##000000
##42839E	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#75819F

Deuteranopia (green-blind)

#68779E

Tritanopia (blue-blind)

#008B8C

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #42839e;
/* rgb */ color: rgb(66, 131, 158);
/* oklch */ color: oklch(57.8% 0.078 227.6);

Tailwind

colors: {
  custom: {
    50: '#7ea7ba',
    500: '#42839e',
    950: '#000000',
  },
}

SCSS

$custom: #42839e;
$custom-light: #7ea7ba;
$custom-dark: #000000;

JSON

{
  "hex": "#42839e",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 158
  },
  "hsl": {
    "h": 197.609,
    "s": 41.071,
    "l": 43.922
  },
  "oklch": {
    "l": 0.57823,
    "c": 0.07815,
    "h": 227.6
  },
  "luminance": 0.19859
}

Semantic roles & 50–950 ramp

primary

#42839E

secondary

#BA9282

accent

#7B57D1

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B0F11

muted

#7C7F80

Preview Lab

Preview with #42839E

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

Preview Lab → · Contrast checker → · Palette generator →