#278CA3#278CA3

#278CA3 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.4% C 0.095 H 216.8°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#278CA3
RGB	rgb(39, 140, 163)
HSL	hsl(191, 61%, 40%)
HSV	hsv(191, 76%, 64%)
CMYK	cmyk(76.1%, 14.1%, 0%, 36.1%)
CIE-LAB	lab(53.85, -20.33, -20.35)
CIE-LCH	lch(53.85, 28.77, 225.03°)
OKLab	oklab(59.4% -0.0759 -0.0568)
OKLCH	oklch(59.4% 0.095 216.8)
XYZ	xyz(16.8228, 21.8298, 37.9702)
Luminance	0.2183 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278CA3 #A33E27

analogous

#27A37C #278CA3 #274EA3

triadic

#278CA3 #A3278C #8CA327

tetradic

#278CA3 #7C27A3 #A33E27 #4EA327

square

#278CA3 #7C27A3 #A33E27 #4EA327

split-complementary

#278CA3 #A3274E #A37C27

monochromatic

#0F3740 #1B6272 #278CA3 #38B3CF #69C6DB

Accessibility & contrast

On white

3.91

#278CA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#278CA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CA3

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278CA3	#FFFFFF	#000000	##000000
##278CA3	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D88A4

Deuteranopia (green-blind)

#6C7BA3

Tritanopia (blue-blind)

#009493

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #278ca3;
/* rgb */ color: rgb(39, 140, 163);
/* oklch */ color: oklch(59.4% 0.095 216.8);

Tailwind

colors: {
  custom: {
    50: '#75adbe',
    500: '#278ca3',
    950: '#000000',
  },
}

SCSS

$custom: #278ca3;
$custom-light: #75adbe;
$custom-dark: #000000;

JSON

{
  "hex": "#278ca3",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 163
  },
  "hsl": {
    "h": 191.129,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.59399,
    "c": 0.09485,
    "h": 216.8
  },
  "luminance": 0.21832
}

Semantic roles & 50–950 ramp

primary

#278CA3

secondary

#C17664

accent

#6143E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #278CA3

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

Preview Lab → · Contrast checker → · Palette generator →