#378AB7#378AB7

#378AB7 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.3% C 0.105 H 236.1°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#378AB7
RGB	rgb(55, 138, 183)
HSL	hsl(201, 54%, 47%)
HSV	hsv(201, 70%, 72%)
CMYK	cmyk(69.9%, 24.6%, 0%, 28.2%)
CIE-LAB	lab(54.46, -10.27, -30.85)
CIE-LCH	lch(54.46, 32.51, 251.59°)
OKLab	oklab(60.27% -0.0584 -0.0868)
OKLCH	oklch(60.27% 0.105 236.1)
XYZ	xyz(19.2079, 22.4060, 48.1030)
Luminance	0.2241 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AB7 #B76437

analogous

#37B7A4 #378AB7 #374AB7

triadic

#378AB7 #B7378A #8AB737

tetradic

#378AB7 #A437B7 #B76437 #4AB737

square

#378AB7 #A437B7 #B76437 #4AB737

split-complementary

#378AB7 #B7374A #B7A437

monochromatic

#1B4359 #296788 #378AB7 #5DA6CE #8CC0DC

Accessibility & contrast

On white

3.83

#378AB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#378AB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AB7

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AB7	#FFFFFF	#000000	##000000
##378AB7	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7589B9

Deuteranopia (green-blind)

#637DB6

Tritanopia (blue-blind)

#009699

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378ab7;
/* rgb */ color: rgb(55, 138, 183);
/* oklch */ color: oklch(60.3% 0.105 236.1);

Tailwind

colors: {
  custom: {
    50: '#7daccc',
    500: '#378ab7',
    950: '#000000',
  },
}

SCSS

$custom: #378ab7;
$custom-light: #7daccc;
$custom-dark: #000000;

JSON

{
  "hex": "#378ab7",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 183
  },
  "hsl": {
    "h": 201.094,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.60272,
    "c": 0.10459,
    "h": 236.1
  },
  "luminance": 0.22408
}

Semantic roles & 50–950 ramp

primary

#378AB7

secondary

#C79B83

accent

#7E4BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378AB7

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

Preview Lab → · Contrast checker → · Palette generator →