#278A9F#278A9F

#278A9F is a mid, moderate cyan. Relative luminance 0.211; OKLCH L 58.7% C 0.093 H 215.4°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#278A9F
RGB	rgb(39, 138, 159)
HSL	hsl(191, 61%, 39%)
HSV	hsv(191, 75%, 62%)
CMYK	cmyk(75.5%, 13.2%, 0%, 37.6%)
CIE-LAB	lab(53.07, -20.60, -19.23)
CIE-LCH	lch(53.07, 28.18, 223.03°)
OKLab	oklab(58.72% -0.0756 -0.0536)
OKLCH	oklch(58.72% 0.093 215.4)
XYZ	xyz(16.1805, 21.1096, 36.0159)
Luminance	0.2111 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278A9F #9F3C27

analogous

#279F78 #278A9F #274E9F

triadic

#278A9F #9F278A #8A9F27

tetradic

#278A9F #78279F #9F3C27 #4E9F27

square

#278A9F #78279F #9F3C27 #4E9F27

split-complementary

#278A9F #9F274E #9F7827

monochromatic

#0F353D #1B5F6E #278A9F #36B3CE #67C6DA

Accessibility & contrast

On white

4.02

#278A9F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#278A9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278A9F

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278A9F	#FFFFFF	#000000	##000000
##278A9F	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B86A0

Deuteranopia (green-blind)

#6B7A9F

Tritanopia (blue-blind)

#009291

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #278a9f;
/* rgb */ color: rgb(39, 138, 159);
/* oklch */ color: oklch(58.7% 0.093 215.4);

Tailwind

colors: {
  custom: {
    50: '#74acbb',
    500: '#278a9f',
    950: '#000000',
  },
}

SCSS

$custom: #278a9f;
$custom-light: #74acbb;
$custom-dark: #000000;

JSON

{
  "hex": "#278a9f",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 159
  },
  "hsl": {
    "h": 190.5,
    "s": 60.606,
    "l": 38.824
  },
  "oklch": {
    "l": 0.58724,
    "c": 0.09268,
    "h": 215.4
  },
  "luminance": 0.21111
}

Semantic roles & 50–950 ramp

primary

#278A9F

secondary

#C07362

accent

#6044E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #278A9F

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

Preview Lab → · Contrast checker → · Palette generator →