#278BB2#278BB2

#278BB2 is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.8% C 0.106 H 229.2°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#278BB2
RGB	rgb(39, 139, 178)
HSL	hsl(197, 64%, 43%)
HSV	hsv(197, 78%, 70%)
CMYK	cmyk(78.1%, 21.9%, 0%, 30.2%)
CIE-LAB	lab(54.14, -14.66, -28.51)
CIE-LCH	lch(54.14, 32.06, 242.78°)
OKLab	oklab(59.84% -0.0691 -0.0801)
OKLCH	oklch(59.84% 0.106 229.2)
XYZ	xyz(18.1019, 22.1087, 45.4242)
Luminance	0.2211 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278BB2 #B24E27

analogous

#27B294 #278BB2 #2745B2

triadic

#278BB2 #B2278B #8BB227

tetradic

#278BB2 #9427B2 #B24E27 #45B227

square

#278BB2 #9427B2 #B24E27 #45B227

split-complementary

#278BB2 #B22745 #B29427

monochromatic

#113D4E #1C6480 #278BB2 #41ACD5 #73C2E0

Accessibility & contrast

On white

3.87

#278BB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#278BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278BB2

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278BB2	#FFFFFF	#000000	##000000
##278BB2	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7789B4

Deuteranopia (green-blind)

#647CB1

Tritanopia (blue-blind)

#009698

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278bb2;
/* rgb */ color: rgb(39, 139, 178);
/* oklch */ color: oklch(59.8% 0.106 229.2);

Tailwind

colors: {
  custom: {
    50: '#77adc9',
    500: '#278bb2',
    950: '#000000',
  },
}

SCSS

$custom: #278bb2;
$custom-light: #77adc9;
$custom-dark: #000000;

JSON

{
  "hex": "#278bb2",
  "rgb": {
    "r": 39,
    "g": 139,
    "b": 178
  },
  "hsl": {
    "h": 196.835,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.59837,
    "c": 0.10583,
    "h": 229.2
  },
  "luminance": 0.22111
}

Semantic roles & 50–950 ramp

primary

#278BB2

secondary

#C8876D

accent

#6F41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278BB2

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

Preview Lab → · Contrast checker → · Palette generator →