#278DA5#278DA5

#278DA5 is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 59.7% C 0.096 H 217.5°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#278DA5
RGB	rgb(39, 141, 165)
HSL	hsl(191, 62%, 40%)
HSV	hsv(191, 76%, 65%)
CMYK	cmyk(76.4%, 14.5%, 0%, 35.3%)
CIE-LAB	lab(54.23, -20.19, -20.91)
CIE-LCH	lch(54.23, 29.07, 226.00°)
OKLab	oklab(59.74% -0.0761 -0.0584)
OKLCH	oklch(59.74% 0.096 217.5)
XYZ	xyz(17.1502, 22.1956, 38.9703)
Luminance	0.2220 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278DA5 #A53F27

analogous

#27A57E #278DA5 #274EA5

triadic

#278DA5 #A5278D #8DA527

tetradic

#278DA5 #7E27A5 #A53F27 #4EA527

square

#278DA5 #7E27A5 #A53F27 #4EA527

split-complementary

#278DA5 #A5274E #A57E27

monochromatic

#103842 #1B6374 #278DA5 #39B3D0 #6AC6DC

Accessibility & contrast

On white

3.86

#278DA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#278DA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278DA5

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278DA5	#FFFFFF	#000000	##000000
##278DA5	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D89A6

Deuteranopia (green-blind)

#6C7CA5

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #278da5;
/* rgb */ color: rgb(39, 141, 165);
/* oklch */ color: oklch(59.7% 0.096 217.5);

Tailwind

colors: {
  custom: {
    50: '#75aebf',
    500: '#278da5',
    950: '#000000',
  },
}

SCSS

$custom: #278da5;
$custom-light: #75aebf;
$custom-dark: #000000;

JSON

{
  "hex": "#278da5",
  "rgb": {
    "r": 39,
    "g": 141,
    "b": 165
  },
  "hsl": {
    "h": 191.429,
    "s": 61.765,
    "l": 40
  },
  "oklch": {
    "l": 0.59737,
    "c": 0.09595,
    "h": 217.5
  },
  "luminance": 0.22198
}

Semantic roles & 50–950 ramp

primary

#278DA5

secondary

#C27766

accent

#6243E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278DA5

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

Preview Lab → · Contrast checker → · Palette generator →