#378CB7#378CB7

#378CB7 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.8% C 0.104 H 234.3°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#378CB7
RGB	rgb(55, 140, 183)
HSL	hsl(200, 54%, 47%)
HSV	hsv(200, 70%, 72%)
CMYK	cmyk(69.9%, 23.5%, 0%, 28.2%)
CIE-LAB	lab(55.06, -11.40, -29.91)
CIE-LCH	lch(55.06, 32.01, 249.14°)
OKLab	oklab(60.75% -0.0604 -0.0841)
OKLCH	oklch(60.75% 0.104 234.3)
XYZ	xyz(19.4975, 22.9851, 48.1996)
Luminance	0.2299 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CB7 #B76237

analogous

#37B7A2 #378CB7 #374CB7

triadic

#378CB7 #B7378C #8CB737

tetradic

#378CB7 #A237B7 #B76237 #4CB737

square

#378CB7 #A237B7 #B76237 #4CB737

split-complementary

#378CB7 #B7374C #B7A237

monochromatic

#1B4459 #296888 #378CB7 #5DA8CE #8CC1DC

Accessibility & contrast

On white

3.75

#378CB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#378CB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CB7

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CB7	#FFFFFF	#000000	##000000
##378CB7	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)

#778BB9

Deuteranopia (green-blind)

#667EB6

Tritanopia (blue-blind)

#00979A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378cb7;
/* rgb */ color: rgb(55, 140, 183);
/* oklch */ color: oklch(60.8% 0.104 234.3);

Tailwind

colors: {
  custom: {
    50: '#7dadcc',
    500: '#378cb7',
    950: '#000000',
  },
}

SCSS

$custom: #378cb7;
$custom-light: #7dadcc;
$custom-dark: #000000;

JSON

{
  "hex": "#378cb7",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 183
  },
  "hsl": {
    "h": 200.156,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.60751,
    "c": 0.10352,
    "h": 234.3
  },
  "luminance": 0.22987
}

Semantic roles & 50–950 ramp

primary

#378CB7

secondary

#C79A83

accent

#7C4BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378CB7

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

Preview Lab → · Contrast checker → · Palette generator →