#2378B0#2378B0

#2378B0 is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 55.0% C 0.117 H 242.8°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#2378B0
RGB	rgb(35, 120, 176)
HSL	hsl(204, 67%, 41%)
HSV	hsv(204, 80%, 69%)
CMYK	cmyk(80.1%, 31.8%, 0%, 31%)
CIE-LAB	lab(48.16, -4.91, -36.71)
CIE-LCH	lch(48.16, 37.04, 262.38°)
OKLab	oklab(55.03% -0.0535 -0.1042)
OKLCH	oklch(55.03% 0.117 242.8)
XYZ	xyz(15.2430, 16.9230, 43.5290)
Luminance	0.1693 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2378B0 #B05B23

analogous

#23B0A2 #2378B0 #2331B0

triadic

#2378B0 #B02378 #78B023

tetradic

#2378B0 #A223B0 #B05B23 #31B023

square

#2378B0 #A223B0 #B05B23 #31B023

split-complementary

#2378B0 #B02331 #B0A223

monochromatic

#0F324A #19557D #2378B0 #3998D8 #6CB3E2

Accessibility & contrast

On white

4.79

#2378B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#2378B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2378B0

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2378B0	#FFFFFF	#000000	##FFFFFF
##2378B0	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E79B2

Deuteranopia (green-blind)

#4A6DAF

Tritanopia (blue-blind)

#00868C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #2378b0;
/* rgb */ color: rgb(35, 120, 176);
/* oklch */ color: oklch(55.0% 0.117 242.8);

Tailwind

colors: {
  custom: {
    50: '#759ec8',
    500: '#2378b0',
    950: '#000000',
  },
}

SCSS

$custom: #2378b0;
$custom-light: #759ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2378b0",
  "rgb": {
    "r": 35,
    "g": 120,
    "b": 176
  },
  "hsl": {
    "h": 203.83,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.55026,
    "c": 0.1171,
    "h": 242.8
  },
  "luminance": 0.16925
}

Semantic roles & 50–950 ramp

primary

#2378B0

secondary

#C88D67

accent

#823EEA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2378B0

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

Preview Lab → · Contrast checker → · Palette generator →