#278FA4#278FA4

#278FA4 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.2% C 0.095 H 214.6°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#278FA4
RGB	rgb(39, 143, 164)
HSL	hsl(190, 62%, 40%)
HSV	hsv(190, 76%, 64%)
CMYK	cmyk(76.2%, 12.8%, 0%, 35.7%)
CIE-LAB	lab(54.82, -21.58, -19.44)
CIE-LCH	lch(54.82, 29.04, 222.01°)
OKLab	oklab(60.2% -0.0786 -0.0542)
OKLCH	oklch(60.2% 0.095 214.6)
XYZ	xyz(17.3571, 22.7545, 38.5920)
Luminance	0.2276 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278FA4 #A43C27

analogous

#27A47B #278FA4 #2751A4

triadic

#278FA4 #A4278F #8FA427

tetradic

#278FA4 #7B27A4 #A43C27 #51A427

square

#278FA4 #7B27A4 #A43C27 #51A427

split-complementary

#278FA4 #A42751 #A47B27

monochromatic

#0F3941 #1B6473 #278FA4 #38B6D0 #6AC8DC

Accessibility & contrast

On white

3.78

#278FA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#278FA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278FA4

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278FA4	#FFFFFF	#000000	##000000
##278FA4	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808AA5

Deuteranopia (green-blind)

#6F7EA4

Tritanopia (blue-blind)

#009796

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #278fa4;
/* rgb */ color: rgb(39, 143, 164);
/* oklch */ color: oklch(60.2% 0.095 214.6);

Tailwind

colors: {
  custom: {
    50: '#75b0bf',
    500: '#278fa4',
    950: '#000000',
  },
}

SCSS

$custom: #278fa4;
$custom-light: #75b0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#278fa4",
  "rgb": {
    "r": 39,
    "g": 143,
    "b": 164
  },
  "hsl": {
    "h": 190.08,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.60195,
    "c": 0.09546,
    "h": 214.6
  },
  "luminance": 0.22757
}

Semantic roles & 50–950 ramp

primary

#278FA4

secondary

#C27565

accent

#5E43E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278FA4

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

Preview Lab → · Contrast checker → · Palette generator →