#278AA3#278AA3

#278AA3 is a mid, moderate cyan. Relative luminance 0.213; OKLCH L 58.9% C 0.095 H 218.8°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#278AA3
RGB	rgb(39, 138, 163)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 76%, 64%)
CMYK	cmyk(76.1%, 15.3%, 0%, 36.1%)
CIE-LAB	lab(53.22, -19.26, -21.31)
CIE-LCH	lch(53.22, 28.72, 227.88°)
OKLab	oklab(58.9% -0.0739 -0.0595)
OKLCH	oklch(58.9% 0.095 218.8)
XYZ	xyz(16.5333, 21.2507, 37.8736)
Luminance	0.2125 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278AA3 #A34027

analogous

#27A37E #278AA3 #274CA3

triadic

#278AA3 #A3278A #8AA327

tetradic

#278AA3 #7E27A3 #A34027 #4CA327

square

#278AA3 #7E27A3 #A34027 #4CA327

split-complementary

#278AA3 #A3274C #A37E27

monochromatic

#0F3640 #1B6072 #278AA3 #38B1CF #69C4DB

Accessibility & contrast

On white

4.00

#278AA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#278AA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278AA3

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278AA3	#FFFFFF	#000000	##000000
##278AA3	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A86A4

Deuteranopia (green-blind)

#6A7AA3

Tritanopia (blue-blind)

#009292

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #278aa3;
/* rgb */ color: rgb(39, 138, 163);
/* oklch */ color: oklch(58.9% 0.095 218.8);

Tailwind

colors: {
  custom: {
    50: '#75acbe',
    500: '#278aa3',
    950: '#000000',
  },
}

SCSS

$custom: #278aa3;
$custom-light: #75acbe;
$custom-dark: #000000;

JSON

{
  "hex": "#278aa3",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 163
  },
  "hsl": {
    "h": 192.097,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.58898,
    "c": 0.09492,
    "h": 218.8
  },
  "luminance": 0.21253
}

Semantic roles & 50–950 ramp

primary

#278AA3

secondary

#C17764

accent

#6443E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278AA3

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

Preview Lab → · Contrast checker → · Palette generator →