#378FAB#378FAB

#378FAB is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 60.9% C 0.092 H 222.6°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#378FAB
RGB	rgb(55, 143, 171)
HSL	hsl(194, 51%, 44%)
HSV	hsv(194, 68%, 67%)
CMYK	cmyk(67.8%, 16.4%, 0%, 32.9%)
CIE-LAB	lab(55.48, -17.05, -22.41)
CIE-LCH	lch(55.48, 28.16, 232.73°)
OKLab	oklab(60.92% -0.068 -0.0625)
OKLCH	oklch(60.92% 0.092 222.6)
XYZ	xyz(18.7457, 23.3954, 42.0480)
Luminance	0.2340 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FAB #AB5337

analogous

#37AB8D #378FAB #3755AB

triadic

#378FAB #AB378F #8FAB37

tetradic

#378FAB #8D37AB #AB5337 #55AB37

square

#378FAB #8D37AB #AB5337 #55AB37

split-complementary

#378FAB #AB3755 #AB8D37

monochromatic

#19424E #28687D #378FAB #56ADC9 #85C4D8

Accessibility & contrast

On white

3.70

#378FAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#378FAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FAB

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FAB	#FFFFFF	#000000	##000000
##378FAB	1.00	3.70	5.68	5.68
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8CAC

Deuteranopia (green-blind)

#6F80AB

Tritanopia (blue-blind)

#009898

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378fab;
/* rgb */ color: rgb(55, 143, 171);
/* oklch */ color: oklch(60.9% 0.092 222.6);

Tailwind

colors: {
  custom: {
    50: '#7cb0c4',
    500: '#378fab',
    950: '#000000',
  },
}

SCSS

$custom: #378fab;
$custom-light: #7cb0c4;
$custom-dark: #000000;

JSON

{
  "hex": "#378fab",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 171
  },
  "hsl": {
    "h": 194.483,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.60924,
    "c": 0.09239,
    "h": 222.6
  },
  "luminance": 0.23397
}

Semantic roles & 50–950 ramp

primary

#378FAB

secondary

#C18D7C

accent

#6F4DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #378FAB

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

Preview Lab → · Contrast checker → · Palette generator →