#378BB0#378BB0

#378BB0 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.2% C 0.097 H 230.6°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#378BB0
RGB	rgb(55, 139, 176)
HSL	hsl(198, 52%, 45%)
HSV	hsv(198, 69%, 69%)
CMYK	cmyk(68.8%, 21%, 0%, 31%)
CIE-LAB	lab(54.46, -13.20, -26.84)
CIE-LCH	lch(54.46, 29.91, 243.81°)
OKLab	oklab(60.18% -0.0619 -0.0752)
OKLCH	oklch(60.18% 0.097 230.6)
XYZ	xyz(18.6415, 22.4100, 44.4090)
Luminance	0.2241 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BB0 #B05C37

analogous

#37B098 #378BB0 #374EB0

triadic

#378BB0 #B0378B #8BB037

tetradic

#378BB0 #9837B0 #B05C37 #4EB037

square

#378BB0 #9837B0 #B05C37 #4EB037

split-complementary

#378BB0 #B0374E #B09837

monochromatic

#1A4153 #286681 #378BB0 #59A8CB #88C1DA

Accessibility & contrast

On white

3.83

#378BB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#378BB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BB0

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BB0	#FFFFFF	#000000	##000000
##378BB0	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7889B2

Deuteranopia (green-blind)

#687DAF

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378bb0;
/* rgb */ color: rgb(55, 139, 176);
/* oklch */ color: oklch(60.2% 0.097 230.6);

Tailwind

colors: {
  custom: {
    50: '#7cacc7',
    500: '#378bb0',
    950: '#000000',
  },
}

SCSS

$custom: #378bb0;
$custom-light: #7cacc7;
$custom-dark: #000000;

JSON

{
  "hex": "#378bb0",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 176
  },
  "hsl": {
    "h": 198.347,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.60177,
    "c": 0.09742,
    "h": 230.6
  },
  "luminance": 0.22412
}

Semantic roles & 50–950 ramp

primary

#378BB0

secondary

#C4947F

accent

#784CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378BB0

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

Preview Lab → · Contrast checker → · Palette generator →