#278AB2#278AB2

#278AB2 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.6% C 0.106 H 230.1°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#278AB2
RGB	rgb(39, 138, 178)
HSL	hsl(197, 64%, 43%)
HSV	hsv(197, 78%, 70%)
CMYK	cmyk(78.1%, 22.5%, 0%, 30.2%)
CIE-LAB	lab(53.84, -14.11, -28.98)
CIE-LCH	lch(53.84, 32.23, 244.04°)
OKLab	oklab(59.59% -0.0681 -0.0815)
OKLCH	oklch(59.59% 0.106 230.1)
XYZ	xyz(17.9578, 21.8205, 45.3762)
Luminance	0.2182 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278AB2 #B24F27

analogous

#27B294 #278AB2 #2745B2

triadic

#278AB2 #B2278A #8AB227

tetradic

#278AB2 #9427B2 #B24F27 #45B227

square

#278AB2 #9427B2 #B24F27 #45B227

split-complementary

#278AB2 #B22745 #B29427

monochromatic

#113C4E #1C6380 #278AB2 #41ABD5 #73C1E0

Accessibility & contrast

On white

3.91

#278AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#278AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278AB2

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278AB2	#FFFFFF	#000000	##000000
##278AB2	1.00	3.91	5.36	5.36
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7588B4

Deuteranopia (green-blind)

#637BB1

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278ab2;
/* rgb */ color: rgb(39, 138, 178);
/* oklch */ color: oklch(59.6% 0.106 230.1);

Tailwind

colors: {
  custom: {
    50: '#77acc9',
    500: '#278ab2',
    950: '#000000',
  },
}

SCSS

$custom: #278ab2;
$custom-light: #77acc9;
$custom-dark: #000000;

JSON

{
  "hex": "#278ab2",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 178
  },
  "hsl": {
    "h": 197.266,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.59592,
    "c": 0.10626,
    "h": 230.1
  },
  "luminance": 0.21823
}

Semantic roles & 50–950 ramp

primary

#278AB2

secondary

#C8876D

accent

#7141E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278AB2

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

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