#278BA3#278BA3

#278BA3 is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.1% C 0.095 H 217.8°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#278BA3
RGB	rgb(39, 139, 163)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 76%, 64%)
CMYK	cmyk(76.1%, 14.7%, 0%, 36.1%)
CIE-LAB	lab(53.53, -19.80, -20.83)
CIE-LCH	lch(53.53, 28.74, 226.45°)
OKLab	oklab(59.15% -0.0749 -0.0582)
OKLCH	oklch(59.15% 0.095 217.8)
XYZ	xyz(16.6774, 21.5389, 37.9217)
Luminance	0.2154 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278BA3 #A33F27

analogous

#27A37D #278BA3 #274DA3

triadic

#278BA3 #A3278B #8BA327

tetradic

#278BA3 #7D27A3 #A33F27 #4DA327

square

#278BA3 #7D27A3 #A33F27 #4DA327

split-complementary

#278BA3 #A3274D #A37D27

monochromatic

#0F3740 #1B6172 #278BA3 #38B2CF #69C5DB

Accessibility & contrast

On white

3.96

#278BA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#278BA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278BA3

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278BA3	#FFFFFF	#000000	##000000
##278BA3	1.00	3.96	5.31	5.31
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C87A4

Deuteranopia (green-blind)

#6B7BA3

Tritanopia (blue-blind)

#009393

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #278ba3;
/* rgb */ color: rgb(39, 139, 163);
/* oklch */ color: oklch(59.1% 0.095 217.8);

Tailwind

colors: {
  custom: {
    50: '#75adbe',
    500: '#278ba3',
    950: '#000000',
  },
}

SCSS

$custom: #278ba3;
$custom-light: #75adbe;
$custom-dark: #000000;

JSON

{
  "hex": "#278ba3",
  "rgb": {
    "r": 39,
    "g": 139,
    "b": 163
  },
  "hsl": {
    "h": 191.613,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.59149,
    "c": 0.09487,
    "h": 217.8
  },
  "luminance": 0.21541
}

Semantic roles & 50–950 ramp

primary

#278BA3

secondary

#C17664

accent

#6343E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278BA3

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

Preview Lab → · Contrast checker → · Palette generator →