#278DA3#278DA3

#278DA3 is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.7% C 0.095 H 215.8°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#278DA3
RGB	rgb(39, 141, 163)
HSL	hsl(191, 61%, 40%)
HSV	hsv(191, 76%, 64%)
CMYK	cmyk(76.1%, 13.5%, 0%, 36.1%)
CIE-LAB	lab(54.16, -20.86, -19.87)
CIE-LCH	lch(54.16, 28.81, 223.61°)
OKLab	oklab(59.65% -0.077 -0.0555)
OKLCH	oklch(59.65% 0.095 215.8)
XYZ	xyz(16.9696, 22.1234, 38.0191)
Luminance	0.2213 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278DA3 #A33D27

analogous

#27A37B #278DA3 #274FA3

triadic

#278DA3 #A3278D #8DA327

tetradic

#278DA3 #7B27A3 #A33D27 #4FA327

square

#278DA3 #7B27A3 #A33D27 #4FA327

split-complementary

#278DA3 #A3274F #A37B27

monochromatic

#0F3840 #1B6272 #278DA3 #38B4CF #69C7DB

Accessibility & contrast

On white

3.87

#278DA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#278DA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278DA3

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278DA3	#FFFFFF	#000000	##000000
##278DA3	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)

#7E88A4

Deuteranopia (green-blind)

#6D7CA3

Tritanopia (blue-blind)

#009594

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278da3;
/* rgb */ color: rgb(39, 141, 163);
/* oklch */ color: oklch(59.7% 0.095 215.8);

Tailwind

colors: {
  custom: {
    50: '#75aebe',
    500: '#278da3',
    950: '#000000',
  },
}

SCSS

$custom: #278da3;
$custom-light: #75aebe;
$custom-dark: #000000;

JSON

{
  "hex": "#278da3",
  "rgb": {
    "r": 39,
    "g": 141,
    "b": 163
  },
  "hsl": {
    "h": 190.645,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.5965,
    "c": 0.09486,
    "h": 215.8
  },
  "luminance": 0.22125
}

Semantic roles & 50–950 ramp

primary

#278DA3

secondary

#C17564

accent

#6043E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278DA3

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

Preview Lab → · Contrast checker → · Palette generator →