#378ABB#378ABB

#378ABB is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.5% C 0.109 H 238.4°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#378ABB
RGB	rgb(55, 138, 187)
HSL	hsl(202, 55%, 47%)
HSV	hsv(202, 71%, 73%)
CMYK	cmyk(70.6%, 26.2%, 0%, 26.7%)
CIE-LAB	lab(54.63, -8.90, -32.86)
CIE-LCH	lch(54.63, 34.04, 254.85°)
OKLab	oklab(60.47% -0.057 -0.0926)
OKLCH	oklch(60.47% 0.109 238.4)
XYZ	xyz(19.6302, 22.5749, 50.3269)
Luminance	0.2258 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378ABB #BB6837

analogous

#37BBAA #378ABB #3748BB

triadic

#378ABB #BB378A #8ABB37

tetradic

#378ABB #AA37BB #BB6837 #48BB37

square

#378ABB #AA37BB #BB6837 #48BB37

split-complementary

#378ABB #BB3748 #BBAA37

monochromatic

#1B445C #29678C #378ABB #5FA6D0 #8EC0DE

Accessibility & contrast

On white

3.81

#378ABB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#378ABB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378ABB

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378ABB	#FFFFFF	#000000	##000000
##378ABB	1.00	3.81	5.52	5.52
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#738ABD

Deuteranopia (green-blind)

#617DBA

Tritanopia (blue-blind)

#00969B

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378abb;
/* rgb */ color: rgb(55, 138, 187);
/* oklch */ color: oklch(60.5% 0.109 238.4);

Tailwind

colors: {
  custom: {
    50: '#7eaccf',
    500: '#378abb',
    950: '#000000',
  },
}

SCSS

$custom: #378abb;
$custom-light: #7eaccf;
$custom-dark: #000000;

JSON

{
  "hex": "#378abb",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 187
  },
  "hsl": {
    "h": 202.273,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.6047,
    "c": 0.10873,
    "h": 238.4
  },
  "luminance": 0.22577
}

Semantic roles & 50–950 ramp

primary

#378ABB

secondary

#C99E85

accent

#814ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378ABB

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

Preview Lab → · Contrast checker → · Palette generator →