#278DA4#278DA4

#278DA4 is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 59.7% C 0.095 H 216.6°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#278DA4
RGB	rgb(39, 141, 164)
HSL	hsl(191, 62%, 40%)
HSV	hsv(191, 76%, 64%)
CMYK	cmyk(76.2%, 14%, 0%, 35.7%)
CIE-LAB	lab(54.20, -20.53, -20.39)
CIE-LCH	lch(54.20, 28.93, 224.81°)
OKLab	oklab(59.69% -0.0766 -0.0569)
OKLCH	oklch(59.69% 0.095 216.6)
XYZ	xyz(17.0596, 22.1594, 38.4928)
Luminance	0.2216 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278DA4 #A43E27

analogous

#27A47D #278DA4 #274FA4

triadic

#278DA4 #A4278D #8DA427

tetradic

#278DA4 #7D27A4 #A43E27 #4FA427

square

#278DA4 #7D27A4 #A43E27 #4FA427

split-complementary

#278DA4 #A4274F #A47D27

monochromatic

#0F3841 #1B6273 #278DA4 #38B4D0 #6AC7DC

Accessibility & contrast

On white

3.87

#278DA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#278DA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278DA4

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278DA4	#FFFFFF	#000000	##000000
##278DA4	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E89A5

Deuteranopia (green-blind)

#6D7CA4

Tritanopia (blue-blind)

#009594

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #278da4;
/* rgb */ color: rgb(39, 141, 164);
/* oklch */ color: oklch(59.7% 0.095 216.6);

Tailwind

colors: {
  custom: {
    50: '#75aebf',
    500: '#278da4',
    950: '#000000',
  },
}

SCSS

$custom: #278da4;
$custom-light: #75aebf;
$custom-dark: #000000;

JSON

{
  "hex": "#278da4",
  "rgb": {
    "r": 39,
    "g": 141,
    "b": 164
  },
  "hsl": {
    "h": 191.04,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.59693,
    "c": 0.09539,
    "h": 216.6
  },
  "luminance": 0.22161
}

Semantic roles & 50–950 ramp

primary

#278DA4

secondary

#C27665

accent

#6143E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278DA4

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

Preview Lab → · Contrast checker → · Palette generator →