#278AAA#278AAA

#278AAA is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.2% C 0.100 H 224.5°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#278AAA
RGB	rgb(39, 138, 170)
HSL	hsl(195, 63%, 41%)
HSV	hsv(195, 77%, 67%)
CMYK	cmyk(77.1%, 18.8%, 0%, 33.3%)
CIE-LAB	lab(53.50, -16.88, -24.91)
CIE-LCH	lch(53.50, 30.09, 235.87°)
OKLab	oklab(59.21% -0.0712 -0.0698)
OKLCH	oklch(59.21% 0.1 224.5)
XYZ	xyz(17.1779, 21.5085, 41.2686)
Luminance	0.2151 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278AAA #AA4727

analogous

#27AA88 #278AAA #2749AA

triadic

#278AAA #AA278A #8AAA27

tetradic

#278AAA #8827AA #AA4727 #49AA27

square

#278AAA #8827AA #AA4727 #49AA27

split-complementary

#278AAA #AA2749 #AA8827

monochromatic

#103946 #1C6278 #278AAA #3CAED2 #6EC2DE

Accessibility & contrast

On white

3.96

#278AAA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#278AAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278AAA

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278AAA	#FFFFFF	#000000	##000000
##278AAA	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7887AC

Deuteranopia (green-blind)

#677AAA

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #278aaa;
/* rgb */ color: rgb(39, 138, 170);
/* oklch */ color: oklch(59.2% 0.100 224.5);

Tailwind

colors: {
  custom: {
    50: '#76acc3',
    500: '#278aaa',
    950: '#000000',
  },
}

SCSS

$custom: #278aaa;
$custom-light: #76acc3;
$custom-dark: #000000;

JSON

{
  "hex": "#278aaa",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 170
  },
  "hsl": {
    "h": 194.656,
    "s": 62.679,
    "l": 40.98
  },
  "oklch": {
    "l": 0.59214,
    "c": 0.09969,
    "h": 224.5
  },
  "luminance": 0.21511
}

Semantic roles & 50–950 ramp

primary

#278AAA

secondary

#C47F69

accent

#6A42E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278AAA

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

Preview Lab → · Contrast checker → · Palette generator →