#378EB9#378EB9

#378EB9 is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.3% C 0.104 H 233.8°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#378EB9
RGB	rgb(55, 142, 185)
HSL	hsl(200, 54%, 47%)
HSV	hsv(200, 70%, 73%)
CMYK	cmyk(70.3%, 23.2%, 0%, 27.5%)
CIE-LAB	lab(55.74, -11.84, -29.99)
CIE-LCH	lch(55.74, 32.24, 248.45°)
OKLab	oklab(61.33% -0.0617 -0.0843)
OKLCH	oklch(61.33% 0.104 233.8)
XYZ	xyz(20.0020, 23.6588, 49.4020)
Luminance	0.2366 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EB9 #B96237

analogous

#37B9A3 #378EB9 #374DB9

triadic

#378EB9 #B9378E #8EB937

tetradic

#378EB9 #A337B9 #B96237 #4DB937

square

#378EB9 #A337B9 #B96237 #4DB937

split-complementary

#378EB9 #B9374D #B9A337

monochromatic

#1B465B #296A8A #378EB9 #5EAACF #8DC3DD

Accessibility & contrast

On white

3.66

#378EB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#378EB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EB9

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EB9	#FFFFFF	#000000	##000000
##378EB9	1.00	3.66	5.73	5.73
#FFFFFF	3.66	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)

#798DBB

Deuteranopia (green-blind)

#6780B8

Tritanopia (blue-blind)

#00999C

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378eb9;
/* rgb */ color: rgb(55, 142, 185);
/* oklch */ color: oklch(61.3% 0.104 233.8);

Tailwind

colors: {
  custom: {
    50: '#7eafce',
    500: '#378eb9',
    950: '#000000',
  },
}

SCSS

$custom: #378eb9;
$custom-light: #7eafce;
$custom-dark: #000000;

JSON

{
  "hex": "#378eb9",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 185
  },
  "hsl": {
    "h": 199.846,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.61326,
    "c": 0.10446,
    "h": 233.8
  },
  "luminance": 0.23661
}

Semantic roles & 50–950 ramp

primary

#378EB9

secondary

#C89A84

accent

#7B4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378EB9

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

Preview Lab → · Contrast checker → · Palette generator →