#278EA3#278EA3

#278EA3 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 59.9% C 0.095 H 214.8°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#278EA3
RGB	rgb(39, 142, 163)
HSL	hsl(190, 61%, 40%)
HSV	hsv(190, 76%, 64%)
CMYK	cmyk(76.1%, 12.9%, 0%, 36.1%)
CIE-LAB	lab(54.47, -21.39, -19.40)
CIE-LCH	lch(54.47, 28.87, 222.21°)
OKLab	oklab(59.9% -0.078 -0.0541)
OKLCH	oklch(59.9% 0.095 214.8)
XYZ	xyz(17.1177, 22.4196, 38.0685)
Luminance	0.2242 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278EA3 #A33C27

analogous

#27A37A #278EA3 #2750A3

triadic

#278EA3 #A3278E #8EA327

tetradic

#278EA3 #7A27A3 #A33C27 #50A327

square

#278EA3 #7A27A3 #A33C27 #50A327

split-complementary

#278EA3 #A32750 #A37A27

monochromatic

#0F3840 #1B6372 #278EA3 #38B6CF #69C8DB

Accessibility & contrast

On white

3.83

#278EA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#278EA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278EA3

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278EA3	#FFFFFF	#000000	##000000
##278EA3	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F89A4

Deuteranopia (green-blind)

#6E7DA3

Tritanopia (blue-blind)

#009695

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #278ea3;
/* rgb */ color: rgb(39, 142, 163);
/* oklch */ color: oklch(59.9% 0.095 214.8);

Tailwind

colors: {
  custom: {
    50: '#75afbe',
    500: '#278ea3',
    950: '#000000',
  },
}

SCSS

$custom: #278ea3;
$custom-light: #75afbe;
$custom-dark: #000000;

JSON

{
  "hex": "#278ea3",
  "rgb": {
    "r": 39,
    "g": 142,
    "b": 163
  },
  "hsl": {
    "h": 190.161,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.59901,
    "c": 0.0949,
    "h": 214.8
  },
  "luminance": 0.22422
}

Semantic roles & 50–950 ramp

primary

#278EA3

secondary

#C17464

accent

#5F43E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278EA3

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

Preview Lab → · Contrast checker → · Palette generator →