#378DB9#378DB9

#378DB9 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.1% C 0.105 H 234.7°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#378DB9
RGB	rgb(55, 141, 185)
HSL	hsl(200, 54%, 47%)
HSV	hsv(200, 70%, 73%)
CMYK	cmyk(70.3%, 23.8%, 0%, 27.5%)
CIE-LAB	lab(55.44, -11.28, -30.45)
CIE-LCH	lch(55.44, 32.47, 249.68°)
OKLab	oklab(61.09% -0.0607 -0.0856)
OKLCH	oklch(61.09% 0.105 234.7)
XYZ	xyz(19.8539, 23.3626, 49.3526)
Luminance	0.2336 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DB9 #B96337

analogous

#37B9A4 #378DB9 #374CB9

triadic

#378DB9 #B9378D #8DB937

tetradic

#378DB9 #A437B9 #B96337 #4CB937

square

#378DB9 #A437B9 #B96337 #4CB937

split-complementary

#378DB9 #B9374C #B9A437

monochromatic

#1B455B #29698A #378DB9 #5EA9CF #8DC2DD

Accessibility & contrast

On white

3.70

#378DB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#378DB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DB9

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DB9	#FFFFFF	#000000	##000000
##378DB9	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788CBB

Deuteranopia (green-blind)

#667FB8

Tritanopia (blue-blind)

#00999C

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378db9;
/* rgb */ color: rgb(55, 141, 185);
/* oklch */ color: oklch(61.1% 0.105 234.7);

Tailwind

colors: {
  custom: {
    50: '#7eaece',
    500: '#378db9',
    950: '#000000',
  },
}

SCSS

$custom: #378db9;
$custom-light: #7eaece;
$custom-dark: #000000;

JSON

{
  "hex": "#378db9",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 185
  },
  "hsl": {
    "h": 200.308,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.61087,
    "c": 0.10497,
    "h": 234.7
  },
  "luminance": 0.23365
}

Semantic roles & 50–950 ramp

primary

#378DB9

secondary

#C89B84

accent

#7C4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378DB9

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

Preview Lab → · Contrast checker → · Palette generator →