#278AA1#278AA1

#278AA1 is a mid, moderate cyan. Relative luminance 0.212; OKLCH L 58.8% C 0.094 H 217.1°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#278AA1
RGB	rgb(39, 138, 161)
HSL	hsl(191, 61%, 39%)
HSV	hsv(191, 76%, 63%)
CMYK	cmyk(75.8%, 14.3%, 0%, 36.9%)
CIE-LAB	lab(53.15, -19.93, -20.27)
CIE-LCH	lch(53.15, 28.43, 225.48°)
OKLab	oklab(58.81% -0.0747 -0.0566)
OKLCH	oklch(58.81% 0.094 217.1)
XYZ	xyz(16.3555, 21.1795, 36.9374)
Luminance	0.2118 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278AA1 #A13E27

analogous

#27A17B #278AA1 #274DA1

triadic

#278AA1 #A1278A #8AA127

tetradic

#278AA1 #7B27A1 #A13E27 #4DA127

square

#278AA1 #7B27A1 #A13E27 #4DA127

split-complementary

#278AA1 #A1274D #A17B27

monochromatic

#0F363E #1B6070 #278AA1 #37B2CE #68C5DA

Accessibility & contrast

On white

4.01

#278AA1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#278AA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278AA1

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278AA1	#FFFFFF	#000000	##000000
##278AA1	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B86A2

Deuteranopia (green-blind)

#6A7AA1

Tritanopia (blue-blind)

#009291

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #278aa1;
/* rgb */ color: rgb(39, 138, 161);
/* oklch */ color: oklch(58.8% 0.094 217.1);

Tailwind

colors: {
  custom: {
    50: '#74acbc',
    500: '#278aa1',
    950: '#000000',
  },
}

SCSS

$custom: #278aa1;
$custom-light: #74acbc;
$custom-dark: #000000;

JSON

{
  "hex": "#278aa1",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 161
  },
  "hsl": {
    "h": 191.311,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.5881,
    "c": 0.09375,
    "h": 217.1
  },
  "luminance": 0.21182
}

Semantic roles & 50–950 ramp

primary

#278AA1

secondary

#C07563

accent

#6244E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#091012

muted

#7B7F81

Preview Lab

Preview with #278AA1

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

Preview Lab → · Contrast checker → · Palette generator →