#278FA5#278FA5

#278FA5 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.2% C 0.096 H 215.5°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#278FA5
RGB	rgb(39, 143, 165)
HSL	hsl(190, 62%, 40%)
HSV	hsv(190, 76%, 65%)
CMYK	cmyk(76.4%, 13.3%, 0%, 35.3%)
CIE-LAB	lab(54.86, -21.25, -19.95)
CIE-LCH	lch(54.86, 29.15, 223.20°)
OKLab	oklab(60.24% -0.0781 -0.0557)
OKLCH	oklch(60.24% 0.096 215.5)
XYZ	xyz(17.4478, 22.7908, 39.0695)
Luminance	0.2279 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278FA5 #A53D27

analogous

#27A57C #278FA5 #2750A5

triadic

#278FA5 #A5278F #8FA527

tetradic

#278FA5 #7C27A5 #A53D27 #50A527

square

#278FA5 #7C27A5 #A53D27 #50A527

split-complementary

#278FA5 #A52750 #A57C27

monochromatic

#103942 #1B6474 #278FA5 #39B6D0 #6AC8DC

Accessibility & contrast

On white

3.78

#278FA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#278FA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278FA5

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278FA5	#FFFFFF	#000000	##000000
##278FA5	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808AA6

Deuteranopia (green-blind)

#6F7EA5

Tritanopia (blue-blind)

#009796

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #278fa5;
/* rgb */ color: rgb(39, 143, 165);
/* oklch */ color: oklch(60.2% 0.096 215.5);

Tailwind

colors: {
  custom: {
    50: '#75b0bf',
    500: '#278fa5',
    950: '#000000',
  },
}

SCSS

$custom: #278fa5;
$custom-light: #75b0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#278fa5",
  "rgb": {
    "r": 39,
    "g": 143,
    "b": 165
  },
  "hsl": {
    "h": 190.476,
    "s": 61.765,
    "l": 40
  },
  "oklch": {
    "l": 0.60238,
    "c": 0.09596,
    "h": 215.5
  },
  "luminance": 0.22793
}

Semantic roles & 50–950 ramp

primary

#278FA5

secondary

#C27666

accent

#5F43E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278FA5

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

Preview Lab → · Contrast checker → · Palette generator →