#378BBC#378BBC

#378BBC is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.8% C 0.109 H 238.1°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#378BBC
RGB	rgb(55, 139, 188)
HSL	hsl(202, 55%, 48%)
HSV	hsv(202, 71%, 74%)
CMYK	cmyk(70.7%, 26.1%, 0%, 26.3%)
CIE-LAB	lab(54.98, -9.12, -32.89)
CIE-LCH	lch(54.98, 34.13, 254.50°)
OKLab	oklab(60.76% -0.0577 -0.0927)
OKLCH	oklch(60.76% 0.109 238.1)
XYZ	xyz(19.8817, 22.9061, 50.9407)
Luminance	0.2291 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BBC #BC6837

analogous

#37BCAA #378BBC #3749BC

triadic

#378BBC #BC378B #8BBC37

tetradic

#378BBC #AA37BC #BC6837 #49BC37

square

#378BBC #AA37BC #BC6837 #49BC37

split-complementary

#378BBC #BC3749 #BCAA37

monochromatic

#1B455D #29688D #378BBC #60A7D0 #8FC1DE

Accessibility & contrast

On white

3.76

#378BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#378BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BBC

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BBC	#FFFFFF	#000000	##000000
##378BBC	1.00	3.76	5.58	5.58
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748BBE

Deuteranopia (green-blind)

#627EBB

Tritanopia (blue-blind)

#00979C

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378bbc;
/* rgb */ color: rgb(55, 139, 188);
/* oklch */ color: oklch(60.8% 0.109 238.1);

Tailwind

colors: {
  custom: {
    50: '#7eacd0',
    500: '#378bbc',
    950: '#000000',
  },
}

SCSS

$custom: #378bbc;
$custom-light: #7eacd0;
$custom-dark: #000000;

JSON

{
  "hex": "#378bbc",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 188
  },
  "hsl": {
    "h": 202.105,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.60758,
    "c": 0.10916,
    "h": 238.1
  },
  "luminance": 0.22908
}

Semantic roles & 50–950 ramp

primary

#378BBC

secondary

#C99F86

accent

#804ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378BBC

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

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