#378ABC#378ABC

#378ABC is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.5% C 0.110 H 238.9°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#378ABC
RGB	rgb(55, 138, 188)
HSL	hsl(203, 55%, 48%)
HSV	hsv(203, 71%, 74%)
CMYK	cmyk(70.7%, 26.6%, 0%, 26.3%)
CIE-LAB	lab(54.68, -8.55, -33.36)
CIE-LCH	lch(54.68, 34.44, 255.62°)
OKLab	oklab(60.52% -0.0567 -0.094)
OKLCH	oklch(60.52% 0.11 238.9)
XYZ	xyz(19.7376, 22.6178, 50.8927)
Luminance	0.2262 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378ABC #BC6937

analogous

#37BCAB #378ABC #3748BC

triadic

#378ABC #BC378A #8ABC37

tetradic

#378ABC #AB37BC #BC6937 #48BC37

square

#378ABC #AB37BC #BC6937 #48BC37

split-complementary

#378ABC #BC3748 #BCAB37

monochromatic

#1B445D #29678D #378ABC #60A6D0 #8FC1DE

Accessibility & contrast

On white

3.80

#378ABC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#378ABC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378ABC

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378ABC	#FFFFFF	#000000	##000000
##378ABC	1.00	3.80	5.52	5.52
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#738ABE

Deuteranopia (green-blind)

#607DBB

Tritanopia (blue-blind)

#00979B

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378abc;
/* rgb */ color: rgb(55, 138, 188);
/* oklch */ color: oklch(60.5% 0.110 238.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#378abc",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 188
  },
  "hsl": {
    "h": 202.556,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.60521,
    "c": 0.1098,
    "h": 238.9
  },
  "luminance": 0.2262
}

Semantic roles & 50–950 ramp

primary

#378ABC

secondary

#C99F86

accent

#814ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378ABC

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

Preview Lab → · Contrast checker → · Palette generator →