#278AAB#278AAB

#278AAB is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.3% C 0.100 H 225.2°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#278AAB
RGB	rgb(39, 138, 171)
HSL	hsl(195, 63%, 41%)
HSV	hsv(195, 77%, 67%)
CMYK	cmyk(77.2%, 19.3%, 0%, 32.9%)
CIE-LAB	lab(53.54, -16.54, -25.42)
CIE-LCH	lch(53.54, 30.33, 236.95°)
OKLab	oklab(59.26% -0.0708 -0.0713)
OKLCH	oklch(59.26% 0.1 225.2)
XYZ	xyz(17.2728, 21.5465, 41.7687)
Luminance	0.2155 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278AAB #AB4827

analogous

#27AB8A #278AAB #2748AB

triadic

#278AAB #AB278A #8AAB27

tetradic

#278AAB #8A27AB #AB4827 #48AB27

square

#278AAB #8A27AB #AB4827 #48AB27

split-complementary

#278AAB #AB2748 #AB8A27

monochromatic

#103A47 #1C6279 #278AAB #3DADD3 #6EC2DE

Accessibility & contrast

On white

3.95

#278AAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#278AAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278AAB

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278AAB	#FFFFFF	#000000	##000000
##278AAB	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7887AD

Deuteranopia (green-blind)

#667AAB

Tritanopia (blue-blind)

#009495

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #278aab;
/* rgb */ color: rgb(39, 138, 171);
/* oklch */ color: oklch(59.3% 0.100 225.2);

Tailwind

colors: {
  custom: {
    50: '#76acc4',
    500: '#278aab',
    950: '#000000',
  },
}

SCSS

$custom: #278aab;
$custom-light: #76acc4;
$custom-dark: #000000;

JSON

{
  "hex": "#278aab",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 171
  },
  "hsl": {
    "h": 195,
    "s": 62.857,
    "l": 41.176
  },
  "oklch": {
    "l": 0.59261,
    "c": 0.10045,
    "h": 225.2
  },
  "luminance": 0.21549
}

Semantic roles & 50–950 ramp

primary

#278AAB

secondary

#C58069

accent

#6B42E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278AAB

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

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