#278DB1#278DB1

#278DB1 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.3% C 0.104 H 226.8°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#278DB1
RGB	rgb(39, 141, 177)
HSL	hsl(196, 64%, 42%)
HSV	hsv(196, 78%, 69%)
CMYK	cmyk(78%, 20.3%, 0%, 30.6%)
CIE-LAB	lab(54.71, -16.11, -27.05)
CIE-LCH	lch(54.71, 31.48, 239.22°)
OKLab	oklab(60.28% -0.0714 -0.0759)
OKLCH	oklch(60.28% 0.104 226.8)
XYZ	xyz(18.2941, 22.6532, 44.9948)
Luminance	0.2266 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278DB1 #B14B27

analogous

#27B190 #278DB1 #2748B1

triadic

#278DB1 #B1278D #8DB127

tetradic

#278DB1 #9027B1 #B14B27 #48B127

square

#278DB1 #9027B1 #B14B27 #48B127

split-complementary

#278DB1 #B12748 #B19027

monochromatic

#113D4D #1C657F #278DB1 #40AED5 #72C3E0

Accessibility & contrast

On white

3.80

#278DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#278DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278DB1

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278DB1	#FFFFFF	#000000	##000000
##278DB1	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8AB3

Deuteranopia (green-blind)

#677DB1

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #278db1;
/* rgb */ color: rgb(39, 141, 177);
/* oklch */ color: oklch(60.3% 0.104 226.8);

Tailwind

colors: {
  custom: {
    50: '#77aec8',
    500: '#278db1',
    950: '#000000',
  },
}

SCSS

$custom: #278db1;
$custom-light: #77aec8;
$custom-dark: #000000;

JSON

{
  "hex": "#278db1",
  "rgb": {
    "r": 39,
    "g": 141,
    "b": 177
  },
  "hsl": {
    "h": 195.652,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.6028,
    "c": 0.10426,
    "h": 226.8
  },
  "luminance": 0.22655
}

Semantic roles & 50–950 ramp

primary

#278DB1

secondary

#C7846D

accent

#6C41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278DB1

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

Preview Lab → · Contrast checker → · Palette generator →