#278CB1#278CB1

#278CB1 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.0% C 0.105 H 227.7°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#278CB1
RGB	rgb(39, 140, 177)
HSL	hsl(196, 64%, 42%)
HSV	hsv(196, 78%, 69%)
CMYK	cmyk(78%, 20.9%, 0%, 30.6%)
CIE-LAB	lab(54.41, -15.56, -27.52)
CIE-LCH	lch(54.41, 31.62, 240.51°)
OKLab	oklab(60.04% -0.0705 -0.0773)
OKLCH	oklch(60.04% 0.105 227.7)
XYZ	xyz(18.1473, 22.3596, 44.9458)
Luminance	0.2236 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CB1 #B14C27

analogous

#27B191 #278CB1 #2747B1

triadic

#278CB1 #B1278C #8CB127

tetradic

#278CB1 #9127B1 #B14C27 #47B127

square

#278CB1 #9127B1 #B14C27 #47B127

split-complementary

#278CB1 #B12747 #B19127

monochromatic

#113D4D #1C647F #278CB1 #40ADD5 #72C3E0

Accessibility & contrast

On white

3.84

#278CB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#278CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CB1

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CB1	#FFFFFF	#000000	##000000
##278CB1	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7889B3

Deuteranopia (green-blind)

#667CB1

Tritanopia (blue-blind)

#009798

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #278cb1;
/* rgb */ color: rgb(39, 140, 177);
/* oklch */ color: oklch(60.0% 0.105 227.7);

Tailwind

colors: {
  custom: {
    50: '#77adc8',
    500: '#278cb1',
    950: '#000000',
  },
}

SCSS

$custom: #278cb1;
$custom-light: #77adc8;
$custom-dark: #000000;

JSON

{
  "hex": "#278cb1",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 177
  },
  "hsl": {
    "h": 196.087,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60035,
    "c": 0.10461,
    "h": 227.7
  },
  "luminance": 0.22362
}

Semantic roles & 50–950 ramp

primary

#278CB1

secondary

#C7856D

accent

#6D41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278CB1

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

Preview Lab → · Contrast checker → · Palette generator →