#378DB0#378DB0

#378DB0 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.7% C 0.097 H 228.6°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#378DB0
RGB	rgb(55, 141, 176)
HSL	hsl(197, 52%, 45%)
HSV	hsv(197, 69%, 69%)
CMYK	cmyk(68.8%, 19.9%, 0%, 31%)
CIE-LAB	lab(55.07, -14.31, -25.90)
CIE-LCH	lch(55.07, 29.59, 241.08°)
OKLab	oklab(60.66% -0.064 -0.0725)
OKLCH	oklch(60.66% 0.097 228.6)
XYZ	xyz(18.9338, 22.9945, 44.5064)
Luminance	0.2300 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DB0 #B05A37

analogous

#37B096 #378DB0 #3751B0

triadic

#378DB0 #B0378D #8DB037

tetradic

#378DB0 #9637B0 #B05A37 #51B037

square

#378DB0 #9637B0 #B05A37 #51B037

split-complementary

#378DB0 #B03751 #B09637

monochromatic

#1A4253 #286881 #378DB0 #59AACB #88C2DA

Accessibility & contrast

On white

3.75

#378DB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#378DB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DB0

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DB0	#FFFFFF	#000000	##000000
##378DB0	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8BB2

Deuteranopia (green-blind)

#6A7EB0

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378db0;
/* rgb */ color: rgb(55, 141, 176);
/* oklch */ color: oklch(60.7% 0.097 228.6);

Tailwind

colors: {
  custom: {
    50: '#7caec7',
    500: '#378db0',
    950: '#000000',
  },
}

SCSS

$custom: #378db0;
$custom-light: #7caec7;
$custom-dark: #000000;

JSON

{
  "hex": "#378db0",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 176
  },
  "hsl": {
    "h": 197.355,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.60662,
    "c": 0.09672,
    "h": 228.6
  },
  "luminance": 0.22997
}

Semantic roles & 50–950 ramp

primary

#378DB0

secondary

#C4937F

accent

#764CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378DB0

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

Preview Lab → · Contrast checker → · Palette generator →