#378BBE#378BBE

#378BBE is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.9% C 0.111 H 239.2°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#378BBE
RGB	rgb(55, 139, 190)
HSL	hsl(203, 55%, 48%)
HSV	hsv(203, 71%, 75%)
CMYK	cmyk(71.1%, 26.8%, 0%, 25.5%)
CIE-LAB	lab(55.06, -8.43, -33.89)
CIE-LCH	lch(55.06, 34.92, 256.03°)
OKLab	oklab(60.86% -0.057 -0.0956)
OKLCH	oklch(60.86% 0.111 239.2)
XYZ	xyz(20.0988, 22.9929, 52.0840)
Luminance	0.2299 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BBE #BE6A37

analogous

#37BEAD #378BBE #3747BE

triadic

#378BBE #BE378B #8BBE37

tetradic

#378BBE #AD37BE #BE6A37 #47BE37

square

#378BBE #AD37BE #BE6A37 #47BE37

split-complementary

#378BBE #BE3747 #BEAD37

monochromatic

#1C465F #29688F #378BBE #61A7D1 #90C1DF

Accessibility & contrast

On white

3.75

#378BBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#378BBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BBE

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BBE	#FFFFFF	#000000	##000000
##378BBE	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#738BC0

Deuteranopia (green-blind)

#617EBD

Tritanopia (blue-blind)

#00989D

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378bbe;
/* rgb */ color: rgb(55, 139, 190);
/* oklch */ color: oklch(60.9% 0.111 239.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#378bbe",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 190
  },
  "hsl": {
    "h": 202.667,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.60858,
    "c": 0.11128,
    "h": 239.2
  },
  "luminance": 0.22995
}

Semantic roles & 50–950 ramp

primary

#378BBE

secondary

#CAA087

accent

#8249DE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378BBE

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

Preview Lab → · Contrast checker → · Palette generator →