#378FB1#378FB1

#378FB1 is a mid, moderate cyan. Relative luminance 0.236; OKLCH L 61.2% C 0.097 H 227.3°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#378FB1
RGB	rgb(55, 143, 177)
HSL	hsl(197, 53%, 45%)
HSV	hsv(197, 69%, 69%)
CMYK	cmyk(68.9%, 19.2%, 0%, 30.6%)
CIE-LAB	lab(55.71, -15.08, -25.47)
CIE-LCH	lch(55.71, 29.60, 239.38°)
OKLab	oklab(61.19% -0.0657 -0.0713)
OKLCH	oklch(61.19% 0.097 227.3)
XYZ	xyz(19.3306, 23.6293, 45.1286)
Luminance	0.2363 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FB1 #B15937

analogous

#37B196 #378FB1 #3752B1

triadic

#378FB1 #B1378F #8FB137

tetradic

#378FB1 #9637B1 #B15937 #52B137

square

#378FB1 #9637B1 #B15937 #52B137

split-complementary

#378FB1 #B13752 #B19637

monochromatic

#1A4454 #286982 #378FB1 #5AACCC #88C3DA

Accessibility & contrast

On white

3.67

#378FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#378FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FB1

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FB1	#FFFFFF	#000000	##000000
##378FB1	1.00	3.67	5.73	5.73
#FFFFFF	3.67	1.00	21.00	21.00
#000000	5.73	21.00	1.00	1.00
##000000	5.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8CB3

Deuteranopia (green-blind)

#6C80B1

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378fb1;
/* rgb */ color: rgb(55, 143, 177);
/* oklch */ color: oklch(61.2% 0.097 227.3);

Tailwind

colors: {
  custom: {
    50: '#7dafc8',
    500: '#378fb1',
    950: '#000000',
  },
}

SCSS

$custom: #378fb1;
$custom-light: #7dafc8;
$custom-dark: #000000;

JSON

{
  "hex": "#378fb1",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 177
  },
  "hsl": {
    "h": 196.721,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.61193,
    "c": 0.09694,
    "h": 227.3
  },
  "luminance": 0.23631
}

Semantic roles & 50–950 ramp

primary

#378FB1

secondary

#C49380

accent

#744CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378FB1

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

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