#278EB4#278EB4

#278EB4 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 60.7% C 0.106 H 227.9°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#278EB4
RGB	rgb(39, 142, 180)
HSL	hsl(196, 64%, 43%)
HSV	hsv(196, 78%, 71%)
CMYK	cmyk(78.3%, 21.1%, 0%, 29.4%)
CIE-LAB	lab(55.14, -15.62, -28.10)
CIE-LCH	lch(55.14, 32.15, 240.93°)
OKLab	oklab(60.67% -0.0713 -0.0789)
OKLCH	oklch(60.67% 0.106 227.9)
XYZ	xyz(18.7445, 23.0703, 46.6363)
Luminance	0.2307 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278EB4 #B44D27

analogous

#27B493 #278EB4 #2747B4

triadic

#278EB4 #B4278E #8EB427

tetradic

#278EB4 #9327B4 #B44D27 #47B427

square

#278EB4 #9327B4 #B44D27 #47B427

split-complementary

#278EB4 #B42747 #B49327

monochromatic

#113F4F #1C6682 #278EB4 #42AED6 #74C4E1

Accessibility & contrast

On white

3.74

#278EB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#278EB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278EB4

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278EB4	#FFFFFF	#000000	##000000
##278EB4	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8CB6

Deuteranopia (green-blind)

#677EB3

Tritanopia (blue-blind)

#00999B

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #278eb4;
/* rgb */ color: rgb(39, 142, 180);
/* oklch */ color: oklch(60.7% 0.106 227.9);

Tailwind

colors: {
  custom: {
    50: '#78afca',
    500: '#278eb4',
    950: '#000000',
  },
}

SCSS

$custom: #278eb4;
$custom-light: #78afca;
$custom-dark: #000000;

JSON

{
  "hex": "#278eb4",
  "rgb": {
    "r": 39,
    "g": 142,
    "b": 180
  },
  "hsl": {
    "h": 196.17,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.60667,
    "c": 0.10635,
    "h": 227.9
  },
  "luminance": 0.23073
}

Semantic roles & 50–950 ramp

primary

#278EB4

secondary

#C8876F

accent

#6D40E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278EB4

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

Preview Lab → · Contrast checker → · Palette generator →