#42819B#42819B

#42819B is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.2% C 0.076 H 227.3°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#42819B
RGB	rgb(66, 129, 155)
HSL	hsl(198, 40%, 43%)
HSV	hsv(198, 57%, 61%)
CMYK	cmyk(57.4%, 16.8%, 0%, 39.2%)
CIE-LAB	lab(50.95, -12.43, -20.09)
CIE-LCH	lch(50.95, 23.62, 238.25°)
OKLab	oklab(57.2% -0.0516 -0.0559)
OKLCH	oklch(57.2% 0.076 227.3)
XYZ	xyz(16.0112, 19.2239, 33.8708)
Luminance	0.1923 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42819B #9B5C42

analogous

#429B88 #42819B #42549B

triadic

#42819B #9B4281 #819B42

tetradic

#42819B #88429B #9B5C42 #549B42

square

#42819B #88429B #9B5C42 #549B42

split-complementary

#42819B #9B4254 #9B8842

monochromatic

#1D3A45 #305D70 #42819B #5FA0BB #8ABACD

Accessibility & contrast

On white

4.33

#42819B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#42819B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #42819B

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42819B	#FFFFFF	#000000	##000000
##42819B	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#737F9C

Deuteranopia (green-blind)

#66759B

Tritanopia (blue-blind)

#008989

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #42819b;
/* rgb */ color: rgb(66, 129, 155);
/* oklch */ color: oklch(57.2% 0.076 227.3);

Tailwind

colors: {
  custom: {
    50: '#7ea5b8',
    500: '#42819b',
    950: '#000000',
  },
}

SCSS

$custom: #42819b;
$custom-light: #7ea5b8;
$custom-dark: #000000;

JSON

{
  "hex": "#42819b",
  "rgb": {
    "r": 66,
    "g": 129,
    "b": 155
  },
  "hsl": {
    "h": 197.528,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.57204,
    "c": 0.07605,
    "h": 227.3
  },
  "luminance": 0.19225
}

Semantic roles & 50–950 ramp

primary

#42819B

secondary

#B89181

accent

#7B58D0

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #42819B

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

Preview Lab → · Contrast checker → · Palette generator →