#4378BC#4378BC

#4378BC is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.8% C 0.120 H 255.5°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#4378BC
RGB	rgb(67, 120, 188)
HSL	hsl(214, 47%, 50%)
HSV	hsv(214, 64%, 74%)
CMYK	cmyk(64.4%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(49.80, 4.05, -40.98)
CIE-LCH	lch(49.80, 41.18, 275.64°)
OKLab	oklab(56.81% -0.0301 -0.1163)
OKLCH	oklch(56.81% 0.12 255.5)
XYZ	xyz(18.1050, 18.2553, 50.1367)
Luminance	0.1826 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378BC #BC8743

analogous

#43B5BC #4378BC #4A43BC

triadic

#4378BC #BC4378 #78BC43

tetradic

#4378BC #BC43B5 #BC8743 #43BC4A

square

#4378BC #BC43B5 #BC8743 #43BC4A

split-complementary

#4378BC #BC4A43 #B5BC43

monochromatic

#233E62 #335B8F #4378BC #7098CC #9DB9DC

Accessibility & contrast

On white

4.51

#4378BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#4378BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378BC

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378BC	#FFFFFF	#000000	##000000
##4378BC	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7DBF

Deuteranopia (green-blind)

#4A71BB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4378bc;
/* rgb */ color: rgb(67, 120, 188);
/* oklch */ color: oklch(56.8% 0.120 255.5);

Tailwind

colors: {
  custom: {
    50: '#839ed0',
    500: '#4378bc',
    950: '#000000',
  },
}

SCSS

$custom: #4378bc;
$custom-light: #839ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4378bc",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 213.719,
    "s": 47.451,
    "l": 50
  },
  "oklch": {
    "l": 0.56805,
    "c": 0.12011,
    "h": 255.5
  },
  "luminance": 0.18257
}

Semantic roles & 50–950 ramp

primary

#4378BC

secondary

#C9B192

accent

#9C51D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4378BC

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

Preview Lab → · Contrast checker → · Palette generator →