#278FB0#278FB0

#278FB0 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.7% C 0.103 H 224.2°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#278FB0
RGB	rgb(39, 143, 176)
HSL	hsl(194, 64%, 42%)
HSV	hsv(194, 78%, 69%)
CMYK	cmyk(77.8%, 18.7%, 0%, 31%)
CIE-LAB	lab(55.29, -17.54, -25.59)
CIE-LCH	lch(55.29, 31.03, 235.57°)
OKLab	oklab(60.73% -0.0738 -0.0717)
OKLCH	oklch(60.73% 0.103 224.2)
XYZ	xyz(18.4924, 23.2086, 44.5710)
Luminance	0.2321 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278FB0 #B04827

analogous

#27B08D #278FB0 #274AB0

triadic

#278FB0 #B0278F #8FB027

tetradic

#278FB0 #8D27B0 #B04827 #4AB027

square

#278FB0 #8D27B0 #B04827 #4AB027

split-complementary

#278FB0 #B0274A #B08D27

monochromatic

#113E4C #1C667E #278FB0 #40B1D5 #72C5E0

Accessibility & contrast

On white

3.72

#278FB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#278FB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278FB0

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278FB0	#FFFFFF	#000000	##000000
##278FB0	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8CB2

Deuteranopia (green-blind)

#6A7FB0

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #278fb0;
/* rgb */ color: rgb(39, 143, 176);
/* oklch */ color: oklch(60.7% 0.103 224.2);

Tailwind

colors: {
  custom: {
    50: '#77b0c7',
    500: '#278fb0',
    950: '#000000',
  },
}

SCSS

$custom: #278fb0;
$custom-light: #77b0c7;
$custom-dark: #000000;

JSON

{
  "hex": "#278fb0",
  "rgb": {
    "r": 39,
    "g": 143,
    "b": 176
  },
  "hsl": {
    "h": 194.453,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.60726,
    "c": 0.1029,
    "h": 224.2
  },
  "luminance": 0.23211
}

Semantic roles & 50–950 ramp

primary

#278FB0

secondary

#C7826C

accent

#6941E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278FB0

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

Preview Lab → · Contrast checker → · Palette generator →