#278CA4#278CA4

#278CA4 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.4% C 0.095 H 217.7°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#278CA4
RGB	rgb(39, 140, 164)
HSL	hsl(192, 62%, 40%)
HSV	hsv(192, 76%, 64%)
CMYK	cmyk(76.2%, 14.6%, 0%, 35.7%)
CIE-LAB	lab(53.88, -20.00, -20.87)
CIE-LCH	lch(53.88, 28.90, 226.22°)
OKLab	oklab(59.44% -0.0755 -0.0583)
OKLCH	oklch(59.44% 0.095 217.7)
XYZ	xyz(16.9128, 21.8658, 38.4439)
Luminance	0.2187 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CA4 #A43F27

analogous

#27A47E #278CA4 #274EA4

triadic

#278CA4 #A4278C #8CA427

tetradic

#278CA4 #7E27A4 #A43F27 #4EA427

square

#278CA4 #7E27A4 #A43F27 #4EA427

split-complementary

#278CA4 #A4274E #A47E27

monochromatic

#0F3841 #1B6273 #278CA4 #38B3D0 #6AC6DC

Accessibility & contrast

On white

3.91

#278CA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#278CA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CA4

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CA4	#FFFFFF	#000000	##000000
##278CA4	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C88A5

Deuteranopia (green-blind)

#6C7BA4

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278ca4;
/* rgb */ color: rgb(39, 140, 164);
/* oklch */ color: oklch(59.4% 0.095 217.7);

Tailwind

colors: {
  custom: {
    50: '#75adbf',
    500: '#278ca4',
    950: '#000000',
  },
}

SCSS

$custom: #278ca4;
$custom-light: #75adbf;
$custom-dark: #000000;

JSON

{
  "hex": "#278ca4",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 164
  },
  "hsl": {
    "h": 191.52,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.59443,
    "c": 0.09541,
    "h": 217.7
  },
  "luminance": 0.21868
}

Semantic roles & 50–950 ramp

primary

#278CA4

secondary

#C27765

accent

#6243E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278CA4

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

Preview Lab → · Contrast checker → · Palette generator →