#378ABF#378ABF

#378ABF is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.7% C 0.113 H 240.5°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#378ABF
RGB	rgb(55, 138, 191)
HSL	hsl(203, 55%, 48%)
HSV	hsv(203, 71%, 75%)
CMYK	cmyk(71.2%, 27.7%, 0%, 25.1%)
CIE-LAB	lab(54.81, -7.51, -34.85)
CIE-LCH	lch(54.81, 35.65, 257.84°)
OKLab	oklab(60.67% -0.0557 -0.0984)
OKLCH	oklch(60.67% 0.113 240.5)
XYZ	xyz(20.0643, 22.7485, 52.6136)
Luminance	0.2275 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378ABF #BF6C37

analogous

#37BFB0 #378ABF #3746BF

triadic

#378ABF #BF378A #8ABF37

tetradic

#378ABF #B037BF #BF6C37 #46BF37

square

#378ABF #B037BF #BF6C37 #46BF37

split-complementary

#378ABF #BF3746 #BFB037

monochromatic

#1C4560 #29688F #378ABF #62A6D2 #91C1DF

Accessibility & contrast

On white

3.78

#378ABF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#378ABF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378ABF

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378ABF	#FFFFFF	#000000	##000000
##378ABF	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#718AC1

Deuteranopia (green-blind)

#5F7DBE

Tritanopia (blue-blind)

#00979C

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378abf;
/* rgb */ color: rgb(55, 138, 191);
/* oklch */ color: oklch(60.7% 0.113 240.5);

Tailwind

colors: {
  custom: {
    50: '#7eacd2',
    500: '#378abf',
    950: '#000000',
  },
}

SCSS

$custom: #378abf;
$custom-light: #7eacd2;
$custom-dark: #000000;

JSON

{
  "hex": "#378abf",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 191
  },
  "hsl": {
    "h": 203.382,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.60673,
    "c": 0.11304,
    "h": 240.5
  },
  "luminance": 0.22751
}

Semantic roles & 50–950 ramp

primary

#378ABF

secondary

#CAA288

accent

#8349DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378ABF

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

Preview Lab → · Contrast checker → · Palette generator →