#278CB2#278CB2

#278CB2 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.1% C 0.105 H 228.3°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#278CB2
RGB	rgb(39, 140, 178)
HSL	hsl(196, 64%, 43%)
HSV	hsv(196, 78%, 70%)
CMYK	cmyk(78.1%, 21.3%, 0%, 30.2%)
CIE-LAB	lab(54.45, -15.22, -28.03)
CIE-LCH	lch(54.45, 31.90, 241.51°)
OKLab	oklab(60.08% -0.0701 -0.0788)
OKLCH	oklch(60.08% 0.105 228.3)
XYZ	xyz(18.2474, 22.3996, 45.4727)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CB2 #B24D27

analogous

#27B293 #278CB2 #2746B2

triadic

#278CB2 #B2278C #8CB227

tetradic

#278CB2 #9327B2 #B24D27 #46B227

square

#278CB2 #9327B2 #B24D27 #46B227

split-complementary

#278CB2 #B22746 #B29327

monochromatic

#113D4E #1C6580 #278CB2 #41ADD5 #73C2E0

Accessibility & contrast

On white

3.83

#278CB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#278CB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CB2

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CB2	#FFFFFF	#000000	##000000
##278CB2	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788AB4

Deuteranopia (green-blind)

#667CB1

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #278cb2;
/* rgb */ color: rgb(39, 140, 178);
/* oklch */ color: oklch(60.1% 0.105 228.3);

Tailwind

colors: {
  custom: {
    50: '#77adc9',
    500: '#278cb2',
    950: '#000000',
  },
}

SCSS

$custom: #278cb2;
$custom-light: #77adc9;
$custom-dark: #000000;

JSON

{
  "hex": "#278cb2",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 178
  },
  "hsl": {
    "h": 196.403,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.60082,
    "c": 0.10543,
    "h": 228.3
  },
  "luminance": 0.22402
}

Semantic roles & 50–950 ramp

primary

#278CB2

secondary

#C8866D

accent

#6E41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278CB2

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

Preview Lab → · Contrast checker → · Palette generator →