#278CB4#278CB4

#278CB4 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.2% C 0.107 H 229.7°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#278CB4
RGB	rgb(39, 140, 180)
HSL	hsl(197, 64%, 43%)
HSV	hsv(197, 78%, 71%)
CMYK	cmyk(78.3%, 22.2%, 0%, 29.4%)
CIE-LAB	lab(54.53, -14.52, -29.04)
CIE-LCH	lch(54.53, 32.47, 243.44°)
OKLab	oklab(60.18% -0.0693 -0.0817)
OKLCH	oklch(60.18% 0.107 229.7)
XYZ	xyz(18.4496, 22.4805, 46.5380)
Luminance	0.2248 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CB4 #B44F27

analogous

#27B495 #278CB4 #2746B4

triadic

#278CB4 #B4278C #8CB427

tetradic

#278CB4 #9527B4 #B44F27 #46B427

square

#278CB4 #9527B4 #B44F27 #46B427

split-complementary

#278CB4 #B42746 #B49527

monochromatic

#113E4F #1C6582 #278CB4 #42ACD6 #74C2E1

Accessibility & contrast

On white

3.82

#278CB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#278CB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CB4

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CB4	#FFFFFF	#000000	##000000
##278CB4	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#778AB6

Deuteranopia (green-blind)

#657DB3

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #278cb4;
/* rgb */ color: rgb(39, 140, 180);
/* oklch */ color: oklch(60.2% 0.107 229.7);

Tailwind

colors: {
  custom: {
    50: '#77adca',
    500: '#278cb4',
    950: '#000000',
  },
}

SCSS

$custom: #278cb4;
$custom-light: #77adca;
$custom-dark: #000000;

JSON

{
  "hex": "#278cb4",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 180
  },
  "hsl": {
    "h": 197.021,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.60178,
    "c": 0.10715,
    "h": 229.7
  },
  "luminance": 0.22483
}

Semantic roles & 50–950 ramp

primary

#278CB4

secondary

#C8886F

accent

#7040E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278CB4

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

Preview Lab → · Contrast checker → · Palette generator →