#278CB6#278CB6

#278CB6 is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.3% C 0.109 H 231.0°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#278CB6
RGB	rgb(39, 140, 182)
HSL	hsl(198, 65%, 43%)
HSV	hsv(198, 79%, 71%)
CMYK	cmyk(78.6%, 23.1%, 0%, 28.6%)
CIE-LAB	lab(54.62, -13.82, -30.05)
CIE-LCH	lch(54.62, 33.08, 245.31°)
OKLab	oklab(60.28% -0.0686 -0.0846)
OKLCH	oklch(60.28% 0.109 231)
XYZ	xyz(18.6548, 22.5626, 47.6187)
Luminance	0.2256 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CB6 #B65127

analogous

#27B698 #278CB6 #2745B6

triadic

#278CB6 #B6278C #8CB627

tetradic

#278CB6 #9827B6 #B65127 #45B627

square

#278CB6 #9827B6 #B65127 #45B627

split-complementary

#278CB6 #B62745 #B69827

monochromatic

#113E51 #1C6584 #278CB6 #43ACD7 #76C2E2

Accessibility & contrast

On white

3.81

#278CB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#278CB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CB6

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CB6	#FFFFFF	#000000	##000000
##278CB6	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#778AB8

Deuteranopia (green-blind)

#647DB5

Tritanopia (blue-blind)

#00979A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #278cb6;
/* rgb */ color: rgb(39, 140, 182);
/* oklch */ color: oklch(60.3% 0.109 231.0);

Tailwind

colors: {
  custom: {
    50: '#78adcc',
    500: '#278cb6',
    950: '#000000',
  },
}

SCSS

$custom: #278cb6;
$custom-light: #78adcc;
$custom-dark: #000000;

JSON

{
  "hex": "#278cb6",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 182
  },
  "hsl": {
    "h": 197.622,
    "s": 64.706,
    "l": 43.333
  },
  "oklch": {
    "l": 0.60275,
    "c": 0.10893,
    "h": 231
  },
  "luminance": 0.22565
}

Semantic roles & 50–950 ramp

primary

#278CB6

secondary

#C98A70

accent

#7140E8

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278CB6

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

Preview Lab → · Contrast checker → · Palette generator →