#278B9F#278B9F

#278B9F is a mid, moderate cyan. Relative luminance 0.214; OKLCH L 59.0% C 0.093 H 214.3°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#278B9F
RGB	rgb(39, 139, 159)
HSL	hsl(190, 61%, 39%)
HSV	hsv(190, 75%, 62%)
CMYK	cmyk(75.5%, 12.6%, 0%, 37.6%)
CIE-LAB	lab(53.38, -21.13, -18.75)
CIE-LCH	lch(53.38, 28.25, 221.59°)
OKLab	oklab(58.98% -0.0766 -0.0523)
OKLCH	oklch(58.98% 0.093 214.3)
XYZ	xyz(16.3247, 21.3978, 36.0640)
Luminance	0.2140 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278B9F #9F3B27

analogous

#279F77 #278B9F #274F9F

triadic

#278B9F #9F278B #8B9F27

tetradic

#278B9F #77279F #9F3B27 #4F9F27

square

#278B9F #77279F #9F3B27 #4F9F27

split-complementary

#278B9F #9F274F #9F7727

monochromatic

#0F353D #1B606E #278B9F #36B4CE #67C7DA

Accessibility & contrast

On white

3.98

#278B9F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#278B9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278B9F

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278B9F	#FFFFFF	#000000	##000000
##278B9F	1.00	3.98	5.28	5.28
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D86A0

Deuteranopia (green-blind)

#6C7A9F

Tritanopia (blue-blind)

#009391

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #278b9f;
/* rgb */ color: rgb(39, 139, 159);
/* oklch */ color: oklch(59.0% 0.093 214.3);

Tailwind

colors: {
  custom: {
    50: '#74adbb',
    500: '#278b9f',
    950: '#000000',
  },
}

SCSS

$custom: #278b9f;
$custom-light: #74adbb;
$custom-dark: #000000;

JSON

{
  "hex": "#278b9f",
  "rgb": {
    "r": 39,
    "g": 139,
    "b": 159
  },
  "hsl": {
    "h": 190,
    "s": 60.606,
    "l": 38.824
  },
  "oklch": {
    "l": 0.58976,
    "c": 0.09274,
    "h": 214.3
  },
  "luminance": 0.214
}

Semantic roles & 50–950 ramp

primary

#278B9F

secondary

#C07262

accent

#5F44E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #278B9F

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

Preview Lab → · Contrast checker → · Palette generator →