#378EB2#378EB2

#378EB2 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.0% C 0.098 H 229.1°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#378EB2
RGB	rgb(55, 142, 178)
HSL	hsl(198, 53%, 46%)
HSV	hsv(198, 69%, 70%)
CMYK	cmyk(69.1%, 20.2%, 0%, 30.2%)
CIE-LAB	lab(55.45, -14.19, -26.45)
CIE-LCH	lch(55.45, 30.02, 241.78°)
OKLab	oklab(61% -0.0643 -0.0741)
OKLCH	oklch(61% 0.098 229.1)
XYZ	xyz(19.2812, 23.3705, 45.6056)
Luminance	0.2337 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EB2 #B25B37

analogous

#37B298 #378EB2 #3750B2

triadic

#378EB2 #B2378E #8EB237

tetradic

#378EB2 #9837B2 #B25B37 #50B237

square

#378EB2 #9837B2 #B25B37 #50B237

split-complementary

#378EB2 #B23750 #B29837

monochromatic

#1A4354 #296983 #378EB2 #5AABCC #89C3DB

Accessibility & contrast

On white

3.70

#378EB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#378EB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EB2

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EB2	#FFFFFF	#000000	##000000
##378EB2	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8CB4

Deuteranopia (green-blind)

#6A7FB2

Tritanopia (blue-blind)

#00989A

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378eb2;
/* rgb */ color: rgb(55, 142, 178);
/* oklch */ color: oklch(61.0% 0.098 229.1);

Tailwind

colors: {
  custom: {
    50: '#7dafc9',
    500: '#378eb2',
    950: '#000000',
  },
}

SCSS

$custom: #378eb2;
$custom-light: #7dafc9;
$custom-dark: #000000;

JSON

{
  "hex": "#378eb2",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 178
  },
  "hsl": {
    "h": 197.561,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.60996,
    "c": 0.0981,
    "h": 229.1
  },
  "luminance": 0.23373
}

Semantic roles & 50–950 ramp

primary

#378EB2

secondary

#C59480

accent

#764CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378EB2

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

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