#4378BF#4378BF

#4378BF is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.0% C 0.124 H 256.3°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#4378BF
RGB	rgb(67, 120, 191)
HSL	hsl(214, 49%, 51%)
HSV	hsv(214, 65%, 75%)
CMYK	cmyk(64.9%, 37.2%, 0%, 25.1%)
CIE-LAB	lab(49.96, 5.10, -42.46)
CIE-LCH	lch(49.96, 42.77, 276.84°)
OKLab	oklab(56.98% -0.0293 -0.1206)
OKLCH	oklch(56.98% 0.124 256.3)
XYZ	xyz(18.4318, 18.3860, 51.8576)
Luminance	0.1839 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378BF #BF8A43

analogous

#43B6BF #4378BF #4C43BF

triadic

#4378BF #BF4378 #78BF43

tetradic

#4378BF #BF43B6 #BF8A43 #43BF4C

square

#4378BF #BF43B6 #BF8A43 #43BF4C

split-complementary

#4378BF #BF4C43 #B6BF43

monochromatic

#223F65 #325B93 #4378BF #7199CF #9EBADE

Accessibility & contrast

On white

4.49

#4378BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#4378BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378BF

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378BF	#FFFFFF	#000000	##000000
##4378BF	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#597DC2

Deuteranopia (green-blind)

#4772BE

Tritanopia (blue-blind)

#008892

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4378bf;
/* rgb */ color: rgb(67, 120, 191);
/* oklch */ color: oklch(57.0% 0.124 256.3);

Tailwind

colors: {
  custom: {
    50: '#839ed2',
    500: '#4378bf',
    950: '#000000',
  },
}

SCSS

$custom: #4378bf;
$custom-light: #839ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#4378bf",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 191
  },
  "hsl": {
    "h": 214.355,
    "s": 49.206,
    "l": 50.588
  },
  "oklch": {
    "l": 0.56978,
    "c": 0.12412,
    "h": 256.3
  },
  "luminance": 0.18388
}

Semantic roles & 50–950 ramp

primary

#4378BF

secondary

#CAB393

accent

#9E4FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4378BF

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

Preview Lab → · Contrast checker → · Palette generator →