#378DBD#378DBD

#378DBD is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 61.3% C 0.109 H 237.0°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#378DBD
RGB	rgb(55, 141, 189)
HSL	hsl(201, 55%, 48%)
HSV	hsv(201, 71%, 74%)
CMYK	cmyk(70.9%, 25.4%, 0%, 25.9%)
CIE-LAB	lab(55.62, -9.91, -32.46)
CIE-LCH	lch(55.62, 33.94, 253.02°)
OKLab	oklab(61.28% -0.0593 -0.0914)
OKLCH	oklch(61.28% 0.109 237)
XYZ	xyz(20.2821, 23.5338, 51.6078)
Luminance	0.2354 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DBD #BD6737

analogous

#37BDAA #378DBD #374ABD

triadic

#378DBD #BD378D #8DBD37

tetradic

#378DBD #AA37BD #BD6737 #4ABD37

square

#378DBD #AA37BD #BD6737 #4ABD37

split-complementary

#378DBD #BD374A #BDAA37

monochromatic

#1B465E #296A8E #378DBD #60A9D1 #90C2DF

Accessibility & contrast

On white

3.68

#378DBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#378DBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DBD

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DBD	#FFFFFF	#000000	##000000
##378DBD	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768CBF

Deuteranopia (green-blind)

#647FBC

Tritanopia (blue-blind)

#00999D

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378dbd;
/* rgb */ color: rgb(55, 141, 189);
/* oklch */ color: oklch(61.3% 0.109 237.0);

Tailwind

colors: {
  custom: {
    50: '#7eaed1',
    500: '#378dbd',
    950: '#000000',
  },
}

SCSS

$custom: #378dbd;
$custom-light: #7eaed1;
$custom-dark: #000000;

JSON

{
  "hex": "#378dbd",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 189
  },
  "hsl": {
    "h": 201.493,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.61283,
    "c": 0.10898,
    "h": 237
  },
  "luminance": 0.23536
}

Semantic roles & 50–950 ramp

primary

#378DBD

secondary

#C99E86

accent

#7F4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378DBD

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

Preview Lab → · Contrast checker → · Palette generator →