#278AB1#278AB1

#278AB1 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.5% C 0.105 H 229.4°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#278AB1
RGB	rgb(39, 138, 177)
HSL	hsl(197, 64%, 42%)
HSV	hsv(197, 78%, 69%)
CMYK	cmyk(78%, 22%, 0%, 30.6%)
CIE-LAB	lab(53.79, -14.46, -28.48)
CIE-LCH	lch(53.79, 31.94, 243.08°)
OKLab	oklab(59.54% -0.0685 -0.0801)
OKLCH	oklch(59.54% 0.105 229.4)
XYZ	xyz(17.8578, 21.7805, 44.8493)
Luminance	0.2178 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278AB1 #B14E27

analogous

#27B193 #278AB1 #2745B1

triadic

#278AB1 #B1278A #8AB127

tetradic

#278AB1 #9327B1 #B14E27 #45B127

square

#278AB1 #9327B1 #B14E27 #45B127

split-complementary

#278AB1 #B12745 #B19327

monochromatic

#113C4D #1C637F #278AB1 #40ABD5 #72C1E0

Accessibility & contrast

On white

3.92

#278AB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#278AB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278AB1

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278AB1	#FFFFFF	#000000	##000000
##278AB1	1.00	3.92	5.36	5.36
#FFFFFF	3.92	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)

#7688B3

Deuteranopia (green-blind)

#637BB0

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278ab1;
/* rgb */ color: rgb(39, 138, 177);
/* oklch */ color: oklch(59.5% 0.105 229.4);

Tailwind

colors: {
  custom: {
    50: '#77acc8',
    500: '#278ab1',
    950: '#000000',
  },
}

SCSS

$custom: #278ab1;
$custom-light: #77acc8;
$custom-dark: #000000;

JSON

{
  "hex": "#278ab1",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 177
  },
  "hsl": {
    "h": 196.957,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.59544,
    "c": 0.10538,
    "h": 229.4
  },
  "luminance": 0.21783
}

Semantic roles & 50–950 ramp

primary

#278AB1

secondary

#C7866D

accent

#7041E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278AB1

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

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