#378EC3#378EC3

#378EC3 is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 61.8% C 0.115 H 239.4°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#378EC3
RGB	rgb(55, 142, 195)
HSL	hsl(203, 56%, 49%)
HSV	hsv(203, 72%, 76%)
CMYK	cmyk(71.8%, 27.2%, 0%, 23.5%)
CIE-LAB	lab(56.18, -8.41, -34.98)
CIE-LCH	lch(56.18, 35.98, 256.48°)
OKLab	oklab(61.82% -0.0583 -0.0987)
OKLCH	oklch(61.82% 0.115 239.4)
XYZ	xyz(21.0950, 24.0960, 55.1584)
Luminance	0.2410 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EC3 #C36C37

analogous

#37C3B2 #378EC3 #3748C3

triadic

#378EC3 #C3378E #8EC337

tetradic

#378EC3 #B237C3 #C36C37 #48C337

square

#378EC3 #B237C3 #C36C37 #48C337

split-complementary

#378EC3 #C33748 #C3B237

monochromatic

#1C4864 #2A6B93 #378EC3 #64A9D3 #94C4E1

Accessibility & contrast

On white

3.61

#378EC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#378EC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EC3

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EC3	#FFFFFF	#000000	##000000
##378EC3	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758EC5

Deuteranopia (green-blind)

#6281C2

Tritanopia (blue-blind)

#009BA0

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #378ec3;
/* rgb */ color: rgb(55, 142, 195);
/* oklch */ color: oklch(61.8% 0.115 239.4);

Tailwind

colors: {
  custom: {
    50: '#7faed5',
    500: '#378ec3',
    950: '#000000',
  },
}

SCSS

$custom: #378ec3;
$custom-light: #7faed5;
$custom-dark: #000000;

JSON

{
  "hex": "#378ec3",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 195
  },
  "hsl": {
    "h": 202.714,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.6182,
    "c": 0.11465,
    "h": 239.4
  },
  "luminance": 0.24098
}

Semantic roles & 50–950 ramp

primary

#378EC3

secondary

#CCA38A

accent

#8249DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378EC3

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

Preview Lab → · Contrast checker → · Palette generator →