#378FAA#378FAA

#378FAA is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 60.9% C 0.092 H 221.8°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#378FAA
RGB	rgb(55, 143, 170)
HSL	hsl(194, 51%, 44%)
HSV	hsv(194, 68%, 67%)
CMYK	cmyk(67.6%, 15.9%, 0%, 33.3%)
CIE-LAB	lab(55.44, -17.37, -21.89)
CIE-LCH	lch(55.44, 27.95, 231.57°)
OKLab	oklab(60.88% -0.0684 -0.0611)
OKLCH	oklch(60.88% 0.092 221.8)
XYZ	xyz(18.6508, 23.3574, 41.5479)
Luminance	0.2336 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FAA #AA5237

analogous

#37AA8C #378FAA #3756AA

triadic

#378FAA #AA378F #8FAA37

tetradic

#378FAA #8C37AA #AA5237 #56AA37

square

#378FAA #8C37AA #AA5237 #56AA37

split-complementary

#378FAA #AA3756 #AA8C37

monochromatic

#19414E #28687C #378FAA #56ADC8 #84C4D7

Accessibility & contrast

On white

3.70

#378FAA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#378FAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FAA

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FAA	#FFFFFF	#000000	##000000
##378FAA	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8CAB

Deuteranopia (green-blind)

#6F80AA

Tritanopia (blue-blind)

#009898

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378faa;
/* rgb */ color: rgb(55, 143, 170);
/* oklch */ color: oklch(60.9% 0.092 221.8);

Tailwind

colors: {
  custom: {
    50: '#7cb0c3',
    500: '#378faa',
    950: '#000000',
  },
}

SCSS

$custom: #378faa;
$custom-light: #7cb0c3;
$custom-dark: #000000;

JSON

{
  "hex": "#378faa",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 170
  },
  "hsl": {
    "h": 194.087,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.6088,
    "c": 0.0917,
    "h": 221.8
  },
  "luminance": 0.23359
}

Semantic roles & 50–950 ramp

primary

#378FAA

secondary

#C18C7C

accent

#6E4DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #378FAA

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

Preview Lab → · Contrast checker → · Palette generator →