#278CA9#278CA9

#278CA9 is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.7% C 0.099 H 221.7°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#278CA9
RGB	rgb(39, 140, 169)
HSL	hsl(193, 63%, 41%)
HSV	hsv(193, 77%, 66%)
CMYK	cmyk(76.9%, 17.2%, 0%, 33.7%)
CIE-LAB	lab(54.08, -18.31, -23.44)
CIE-LCH	lch(54.08, 29.74, 232.01°)
OKLab	oklab(59.67% -0.0735 -0.0656)
OKLCH	oklch(59.67% 0.099 221.7)
XYZ	xyz(17.3732, 22.0500, 40.8689)
Luminance	0.2205 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CA9 #A94427

analogous

#27A985 #278CA9 #274BA9

triadic

#278CA9 #A9278C #8CA927

tetradic

#278CA9 #8527A9 #A94427 #4BA927

square

#278CA9 #8527A9 #A94427 #4BA927

split-complementary

#278CA9 #A9274B #A98527

monochromatic

#103A46 #1C6377 #278CA9 #3BB0D2 #6DC4DD

Accessibility & contrast

On white

3.88

#278CA9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#278CA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CA9

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CA9	#FFFFFF	#000000	##000000
##278CA9	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B88AB

Deuteranopia (green-blind)

#6A7CA9

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278ca9;
/* rgb */ color: rgb(39, 140, 169);
/* oklch */ color: oklch(59.7% 0.099 221.7);

Tailwind

colors: {
  custom: {
    50: '#76adc2',
    500: '#278ca9',
    950: '#000000',
  },
}

SCSS

$custom: #278ca9;
$custom-light: #76adc2;
$custom-dark: #000000;

JSON

{
  "hex": "#278ca9",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 169
  },
  "hsl": {
    "h": 193.385,
    "s": 62.5,
    "l": 40.784
  },
  "oklch": {
    "l": 0.59665,
    "c": 0.09856,
    "h": 221.7
  },
  "luminance": 0.22052
}

Semantic roles & 50–950 ramp

primary

#278CA9

secondary

#C47C68

accent

#6742E6

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278CA9

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

Preview Lab → · Contrast checker → · Palette generator →