#42879B#42879B

#42879B is a mid, moderate cyan. Relative luminance 0.209; OKLCH L 58.7% C 0.076 H 219.3°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#42879B
RGB	rgb(66, 135, 155)
HSL	hsl(193, 40%, 43%)
HSV	hsv(193, 57%, 61%)
CMYK	cmyk(57.4%, 12.9%, 0%, 39.2%)
CIE-LAB	lab(52.79, -15.75, -17.28)
CIE-LCH	lch(52.79, 23.38, 227.65°)
OKLab	oklab(58.67% -0.0586 -0.0479)
OKLCH	oklch(58.67% 0.076 219.3)
XYZ	xyz(16.8248, 20.8512, 34.1420)
Luminance	0.2085 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42879B #9B5642

analogous

#429B82 #42879B #425A9B

triadic

#42879B #9B4287 #879B42

tetradic

#42879B #82429B #9B5642 #5A9B42

square

#42879B #82429B #9B5642 #5A9B42

split-complementary

#42879B #9B425A #9B8242

monochromatic

#1D3C45 #306270 #42879B #5FA6BB #8ABECD

Accessibility & contrast

On white

4.06

#42879B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#42879B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #42879B

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42879B	#FFFFFF	#000000	##000000
##42879B	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A849C

Deuteranopia (green-blind)

#6D7A9B

Tritanopia (blue-blind)

#008E8D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #42879b;
/* rgb */ color: rgb(66, 135, 155);
/* oklch */ color: oklch(58.7% 0.076 219.3);

Tailwind

colors: {
  custom: {
    50: '#7eaab8',
    500: '#42879b',
    950: '#000000',
  },
}

SCSS

$custom: #42879b;
$custom-light: #7eaab8;
$custom-dark: #000000;

JSON

{
  "hex": "#42879b",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 155
  },
  "hsl": {
    "h": 193.483,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.58672,
    "c": 0.07568,
    "h": 219.3
  },
  "luminance": 0.20853
}

Semantic roles & 50–950 ramp

primary

#42879B

secondary

#B88D81

accent

#7358D0

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1011

muted

#7C7F80

Preview Lab

Preview with #42879B

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

Preview Lab → · Contrast checker → · Palette generator →