#42799B#42799B

#42799B is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.3% C 0.079 H 237.6°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#42799B
RGB	rgb(66, 121, 155)
HSL	hsl(203, 40%, 43%)
HSV	hsv(203, 57%, 61%)
CMYK	cmyk(57.4%, 21.9%, 0%, 39.2%)
CIE-LAB	lab(48.51, -7.86, -23.84)
CIE-LCH	lch(48.51, 25.10, 251.74°)
OKLab	oklab(55.27% -0.0422 -0.0666)
OKLCH	oklch(55.27% 0.079 237.6)
XYZ	xyz(14.9983, 17.1982, 33.5332)
Luminance	0.1720 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42799B #9B6442

analogous

#429B90 #42799B #424D9B

triadic

#42799B #9B4279 #799B42

tetradic

#42799B #90429B #9B6442 #4D9B42

square

#42799B #90429B #9B6442 #4D9B42

split-complementary

#42799B #9B424D #9B9042

monochromatic

#1D3645 #305770 #42799B #5F98BB #8AB4CD

Accessibility & contrast

On white

4.73

#42799B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#42799B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42799B

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42799B	#FFFFFF	#000000	##FFFFFF
##42799B	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69789D

Deuteranopia (green-blind)

#5D6F9A

Tritanopia (blue-blind)

#008284

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #42799b;
/* rgb */ color: rgb(66, 121, 155);
/* oklch */ color: oklch(55.3% 0.079 237.6);

Tailwind

colors: {
  custom: {
    50: '#7e9fb8',
    500: '#42799b',
    950: '#000000',
  },
}

SCSS

$custom: #42799b;
$custom-light: #7e9fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#42799b",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 155
  },
  "hsl": {
    "h": 202.921,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55265,
    "c": 0.07885,
    "h": 237.6
  },
  "luminance": 0.172
}

Semantic roles & 50–950 ramp

primary

#42799B

secondary

#B89681

accent

#8658D0

background

#F8F9FB

surface

#EFF2F6

border

#CACCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #42799B

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

Preview Lab → · Contrast checker → · Palette generator →