#4378BB#4378BB

#4378BB is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.7% C 0.119 H 255.2°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#4378BB
RGB	rgb(67, 120, 187)
HSL	hsl(214, 47%, 50%)
HSV	hsv(214, 64%, 73%)
CMYK	cmyk(64.2%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(49.75, 3.70, -40.49)
CIE-LCH	lch(49.75, 40.66, 275.22°)
OKLab	oklab(56.75% -0.0303 -0.1148)
OKLCH	oklch(56.75% 0.119 255.2)
XYZ	xyz(17.9976, 18.2124, 49.5709)
Luminance	0.1821 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378BB #BB8643

analogous

#43B4BB #4378BB #4A43BB

triadic

#4378BB #BB4378 #78BB43

tetradic

#4378BB #BB43B4 #BB8643 #43BB4A

square

#4378BB #BB43B4 #BB8643 #43BB4A

split-complementary

#4378BB #BB4A43 #B4BB43

monochromatic

#233E61 #335B8E #4378BB #7098CC #9DB9DC

Accessibility & contrast

On white

4.52

#4378BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#4378BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378BB

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378BB	#FFFFFF	#000000	##000000
##4378BB	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7DBE

Deuteranopia (green-blind)

#4A71BA

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4378bb;
/* rgb */ color: rgb(67, 120, 187);
/* oklch */ color: oklch(56.7% 0.119 255.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#4378bb",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 213.5,
    "s": 47.244,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56748,
    "c": 0.11878,
    "h": 255.2
  },
  "luminance": 0.18214
}

Semantic roles & 50–950 ramp

primary

#4378BB

secondary

#C8B092

accent

#9C51D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4378BB

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

Preview Lab → · Contrast checker → · Palette generator →