#378CA5#378CA5

#378CA5 is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 59.9% C 0.089 H 220.7°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#378CA5
RGB	rgb(55, 140, 165)
HSL	hsl(194, 50%, 43%)
HSV	hsv(194, 67%, 65%)
CMYK	cmyk(66.7%, 15.2%, 0%, 35.3%)
CIE-LAB	lab(54.33, -17.37, -20.73)
CIE-LCH	lch(54.33, 27.05, 230.03°)
OKLab	oklab(59.93% -0.0672 -0.0578)
OKLCH	oklch(59.93% 0.089 220.7)
XYZ	xyz(17.7424, 22.2831, 38.9560)
Luminance	0.2228 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CA5 #A55037

analogous

#37A587 #378CA5 #3755A5

triadic

#378CA5 #A5378C #8CA537

tetradic

#378CA5 #8737A5 #A55037 #55A537

square

#378CA5 #8737A5 #A55037 #55A537

split-complementary

#378CA5 #A53755 #A58737

monochromatic

#183E49 #286577 #378CA5 #53ACC6 #81C2D5

Accessibility & contrast

On white

3.85

#378CA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#378CA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CA5

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CA5	#FFFFFF	#000000	##000000
##378CA5	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D88A6

Deuteranopia (green-blind)

#6D7DA5

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378ca5;
/* rgb */ color: rgb(55, 140, 165);
/* oklch */ color: oklch(59.9% 0.089 220.7);

Tailwind

colors: {
  custom: {
    50: '#7badbf',
    500: '#378ca5',
    950: '#000000',
  },
}

SCSS

$custom: #378ca5;
$custom-light: #7badbf;
$custom-dark: #000000;

JSON

{
  "hex": "#378ca5",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 165
  },
  "hsl": {
    "h": 193.636,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.59925,
    "c": 0.08862,
    "h": 220.7
  },
  "luminance": 0.22285
}

Semantic roles & 50–950 ramp

primary

#378CA5

secondary

#BF8979

accent

#6E4EDA

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378CA5

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

Preview Lab → · Contrast checker → · Palette generator →