#278CB0#278CB0

#278CB0 is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.0% C 0.104 H 227.0°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#278CB0
RGB	rgb(39, 140, 176)
HSL	hsl(196, 64%, 42%)
HSV	hsv(196, 78%, 69%)
CMYK	cmyk(77.8%, 20.5%, 0%, 31%)
CIE-LAB	lab(54.36, -15.91, -27.02)
CIE-LCH	lch(54.36, 31.35, 239.51°)
OKLab	oklab(59.99% -0.0708 -0.0759)
OKLCH	oklch(59.99% 0.104 227)
XYZ	xyz(18.0480, 22.3199, 44.4228)
Luminance	0.2232 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CB0 #B04B27

analogous

#27B08F #278CB0 #2748B0

triadic

#278CB0 #B0278C #8CB027

tetradic

#278CB0 #8F27B0 #B04B27 #48B027

square

#278CB0 #8F27B0 #B04B27 #48B027

split-complementary

#278CB0 #B02748 #B08F27

monochromatic

#113C4C #1C647E #278CB0 #40ADD5 #72C3E0

Accessibility & contrast

On white

3.84

#278CB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#278CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CB0

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CB0	#FFFFFF	#000000	##000000
##278CB0	1.00	3.84	5.46	5.46
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7989B2

Deuteranopia (green-blind)

#667CB0

Tritanopia (blue-blind)

#009698

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #278cb0;
/* rgb */ color: rgb(39, 140, 176);
/* oklch */ color: oklch(60.0% 0.104 227.0);

Tailwind

colors: {
  custom: {
    50: '#77adc7',
    500: '#278cb0',
    950: '#000000',
  },
}

SCSS

$custom: #278cb0;
$custom-light: #77adc7;
$custom-dark: #000000;

JSON

{
  "hex": "#278cb0",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 176
  },
  "hsl": {
    "h": 195.766,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.59987,
    "c": 0.10379,
    "h": 227
  },
  "luminance": 0.22322
}

Semantic roles & 50–950 ramp

primary

#278CB0

secondary

#C7846C

accent

#6D41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278CB0

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

Preview Lab → · Contrast checker → · Palette generator →