#2B78AB#2B78AB

#2B78AB is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 55.0% C 0.109 H 241.9°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#2B78AB
RGB	rgb(43, 120, 171)
HSL	hsl(204, 60%, 42%)
HSV	hsv(204, 75%, 67%)
CMYK	cmyk(74.9%, 29.8%, 0%, 32.9%)
CIE-LAB	lab(48.11, -5.79, -33.86)
CIE-LCH	lch(48.11, 34.36, 260.29°)
OKLab	oklab(54.96% -0.0511 -0.0958)
OKLCH	oklch(54.96% 0.109 241.9)
XYZ	xyz(15.0606, 16.8851, 40.9856)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B78AB #AB5E2B

analogous

#2BAB9E #2B78AB #2B38AB

triadic

#2B78AB #AB2B78 #78AB2B

tetradic

#2B78AB #9E2BAB #AB5E2B #38AB2B

square

#2B78AB #9E2BAB #AB5E2B #38AB2B

split-complementary

#2B78AB #AB2B38 #AB9E2B

monochromatic

#123349 #1F567A #2B78AB #4398D0 #74B3DC

Accessibility & contrast

On white

4.80

#2B78AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#2B78AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2B78AB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B78AB	#FFFFFF	#000000	##FFFFFF
##2B78AB	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6079AD

Deuteranopia (green-blind)

#4F6DAA

Tritanopia (blue-blind)

#00858A

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #2b78ab;
/* rgb */ color: rgb(43, 120, 171);
/* oklch */ color: oklch(55.0% 0.109 241.9);

Tailwind

colors: {
  custom: {
    50: '#769ec4',
    500: '#2b78ab',
    950: '#000000',
  },
}

SCSS

$custom: #2b78ab;
$custom-light: #769ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#2b78ab",
  "rgb": {
    "r": 43,
    "g": 120,
    "b": 171
  },
  "hsl": {
    "h": 203.906,
    "s": 59.813,
    "l": 41.961
  },
  "oklch": {
    "l": 0.54964,
    "c": 0.10859,
    "h": 241.9
  },
  "luminance": 0.16887
}

Semantic roles & 50–950 ramp

primary

#2B78AB

secondary

#C4906E

accent

#8445E3

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #2B78AB

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

Preview Lab → · Contrast checker → · Palette generator →