#2378BC#2378BC

#2378BC is a mid, vivid cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.131 H 247.6°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#2378BC
RGB	rgb(35, 120, 188)
HSL	hsl(207, 69%, 44%)
HSV	hsv(207, 81%, 74%)
CMYK	cmyk(81.4%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(48.78, -0.41, -42.67)
CIE-LCH	lch(48.78, 42.67, 269.45°)
OKLab	oklab(55.72% -0.05 -0.1216)
OKLCH	oklch(55.72% 0.131 247.6)
XYZ	xyz(16.4832, 17.4191, 50.0607)
Luminance	0.1742 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2378BC #BC6723

analogous

#23BCB3 #2378BC #232BBC

triadic

#2378BC #BC2378 #78BC23

tetradic

#2378BC #B323BC #BC6723 #2BBC23

square

#2378BC #B323BC #BC6723 #2BBC23

split-complementary

#2378BC #BC232B #BCB323

monochromatic

#103655 #195788 #2378BC #4197DC #74B3E5

Accessibility & contrast

On white

4.68

#2378BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#2378BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2378BC

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2378BC	#FFFFFF	#000000	##FFFFFF
##2378BC	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBF

Deuteranopia (green-blind)

#416EBB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #2378bc;
/* rgb */ color: rgb(35, 120, 188);
/* oklch */ color: oklch(55.7% 0.131 247.6);

Tailwind

colors: {
  custom: {
    50: '#779ed0',
    500: '#2378bc',
    950: '#000000',
  },
}

SCSS

$custom: #2378bc;
$custom-light: #779ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#2378bc",
  "rgb": {
    "r": 35,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 206.667,
    "s": 68.61,
    "l": 43.725
  },
  "oklch": {
    "l": 0.55719,
    "c": 0.13146,
    "h": 247.6
  },
  "luminance": 0.17421
}

Semantic roles & 50–950 ramp

primary

#2378BC

secondary

#CC986F

accent

#8A3CEB

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2378BC

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

Preview Lab → · Contrast checker → · Palette generator →