#4378C3#4378C3

#4378C3 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.2% C 0.129 H 257.3°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#4378C3
RGB	rgb(67, 120, 195)
HSL	hsl(215, 52%, 51%)
HSV	hsv(215, 66%, 76%)
CMYK	cmyk(65.6%, 38.5%, 0%, 23.5%)
CIE-LAB	lab(50.17, 6.49, -44.42)
CIE-LCH	lch(50.17, 44.89, 278.32°)
OKLab	oklab(57.21% -0.0284 -0.1263)
OKLCH	oklch(57.21% 0.129 257.3)
XYZ	xyz(18.8780, 18.5645, 54.2076)
Luminance	0.1857 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378C3 #C38E43

analogous

#43B8C3 #4378C3 #4E43C3

triadic

#4378C3 #C34378 #78C343

tetradic

#4378C3 #C343B8 #C38E43 #43C34E

square

#4378C3 #C343B8 #C38E43 #43C34E

split-complementary

#4378C3 #C34E43 #B8C343

monochromatic

#22406A #315B98 #4378C3 #7199D2 #A0BBE1

Accessibility & contrast

On white

4.46

#4378C3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#4378C3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378C3

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378C3	#FFFFFF	#000000	##000000
##4378C3	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577EC6

Deuteranopia (green-blind)

#4472C1

Tritanopia (blue-blind)

#008994

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4378c3;
/* rgb */ color: rgb(67, 120, 195);
/* oklch */ color: oklch(57.2% 0.129 257.3);

Tailwind

colors: {
  custom: {
    50: '#849ed5',
    500: '#4378c3',
    950: '#000000',
  },
}

SCSS

$custom: #4378c3;
$custom-light: #849ed5;
$custom-dark: #000000;

JSON

{
  "hex": "#4378c3",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 195
  },
  "hsl": {
    "h": 215.156,
    "s": 51.613,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57213,
    "c": 0.12948,
    "h": 257.3
  },
  "luminance": 0.18566
}

Semantic roles & 50–950 ramp

primary

#4378C3

secondary

#CDB695

accent

#A04DDB

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4378C3

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

Preview Lab → · Contrast checker → · Palette generator →