#4378D3#4378D3

#4378D3 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.2% C 0.151 H 260.5°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#4378D3
RGB	rgb(67, 120, 211)
HSL	hsl(218, 62%, 55%)
HSV	hsv(218, 68%, 83%)
CMYK	cmyk(68.2%, 43.1%, 0%, 17.3%)
CIE-LAB	lab(51.07, 12.15, -52.12)
CIE-LCH	lch(51.07, 53.52, 283.12°)
OKLab	oklab(58.2% -0.025 -0.1489)
OKLCH	oklch(58.2% 0.151 260.5)
XYZ	xyz(20.7849, 19.3273, 64.2505)
Luminance	0.1933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378D3 #D39E43

analogous

#43C0D3 #4378D3 #5643D3

triadic

#4378D3 #D34378 #78D343

tetradic

#4378D3 #D343C0 #D39E43 #43D356

square

#4378D3 #D343C0 #D39E43 #43D356

split-complementary

#4378D3 #D35643 #C0D343

monochromatic

#1E417E #295BB0 #4378D3 #759CDF #A6BFEA

Accessibility & contrast

On white

4.32

#4378D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#4378D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378D3

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378D3	#FFFFFF	#000000	##000000
##4378D3	1.00	4.32	4.87	4.87
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C81D7

Deuteranopia (green-blind)

#3473D1

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4378d3;
/* rgb */ color: rgb(67, 120, 211);
/* oklch */ color: oklch(58.2% 0.151 260.5);

Tailwind

colors: {
  custom: {
    50: '#879ee1',
    500: '#4378d3',
    950: '#000000',
  },
}

SCSS

$custom: #4378d3;
$custom-light: #879ee1;
$custom-dark: #000000;

JSON

{
  "hex": "#4378d3",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 211
  },
  "hsl": {
    "h": 217.917,
    "s": 62.069,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58196,
    "c": 0.15101,
    "h": 260.5
  },
  "luminance": 0.19329
}

Semantic roles & 50–950 ramp

primary

#4378D3

secondary

#D7C19A

accent

#A943E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4378D3

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

Preview Lab → · Contrast checker → · Palette generator →