#278BAB#278BAB

#278BAB is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.5% C 0.100 H 224.3°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#278BAB
RGB	rgb(39, 139, 171)
HSL	hsl(195, 63%, 41%)
HSV	hsv(195, 77%, 67%)
CMYK	cmyk(77.2%, 18.7%, 0%, 32.9%)
CIE-LAB	lab(53.85, -17.08, -24.94)
CIE-LCH	lch(53.85, 30.23, 235.59°)
OKLab	oklab(59.51% -0.0718 -0.0699)
OKLCH	oklch(59.51% 0.1 224.3)
XYZ	xyz(17.4170, 21.8347, 41.8168)
Luminance	0.2184 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278BAB #AB4727

analogous

#27AB89 #278BAB #2749AB

triadic

#278BAB #AB278B #8BAB27

tetradic

#278BAB #8927AB #AB4727 #49AB27

square

#278BAB #8927AB #AB4727 #49AB27

split-complementary

#278BAB #AB2749 #AB8927

monochromatic

#103A47 #1C6279 #278BAB #3DAED3 #6EC3DE

Accessibility & contrast

On white

3.91

#278BAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#278BAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278BAB

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278BAB	#FFFFFF	#000000	##000000
##278BAB	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7988AD

Deuteranopia (green-blind)

#677BAB

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278bab;
/* rgb */ color: rgb(39, 139, 171);
/* oklch */ color: oklch(59.5% 0.100 224.3);

Tailwind

colors: {
  custom: {
    50: '#76adc4',
    500: '#278bab',
    950: '#000000',
  },
}

SCSS

$custom: #278bab;
$custom-light: #76adc4;
$custom-dark: #000000;

JSON

{
  "hex": "#278bab",
  "rgb": {
    "r": 39,
    "g": 139,
    "b": 171
  },
  "hsl": {
    "h": 194.545,
    "s": 62.857,
    "l": 41.176
  },
  "oklch": {
    "l": 0.59508,
    "c": 0.10018,
    "h": 224.3
  },
  "luminance": 0.21837
}

Semantic roles & 50–950 ramp

primary

#278BAB

secondary

#C57F69

accent

#6A42E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278BAB

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

Preview Lab → · Contrast checker → · Palette generator →