#4378E1#4378E1

#4378E1 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.1% C 0.170 H 262.3°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#4378E1
RGB	rgb(67, 120, 225)
HSL	hsl(220, 72%, 57%)
HSV	hsv(220, 70%, 88%)
CMYK	cmyk(70.2%, 46.7%, 0%, 11.8%)
CIE-LAB	lab(51.91, 17.14, -58.68)
CIE-LCH	lch(51.91, 61.14, 286.29°)
OKLab	oklab(59.11% -0.0227 -0.1682)
OKLCH	oklch(59.11% 0.17 262.3)
XYZ	xyz(22.6170, 20.0601, 73.8996)
Luminance	0.2006 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378E1 #E1AC43

analogous

#43C7E1 #4378E1 #5D43E1

triadic

#4378E1 #E14378 #78E143

tetradic

#4378E1 #E143C7 #E1AC43 #43E15D

square

#4378E1 #E143C7 #E1AC43 #43E15D

split-complementary

#4378E1 #E15D43 #C7E143

monochromatic

#174192 #2058C7 #4378E1 #789EE9 #ADC4F2

Accessibility & contrast

On white

4.19

#4378E1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#4378E1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378E1

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378E1	#FFFFFF	#000000	##000000
##4378E1	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4083E5

Deuteranopia (green-blind)

#1A75DF

Tritanopia (blue-blind)

#0091A2

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4378e1;
/* rgb */ color: rgb(67, 120, 225);
/* oklch */ color: oklch(59.1% 0.170 262.3);

Tailwind

colors: {
  custom: {
    50: '#899eeb',
    500: '#4378e1',
    950: '#000000',
  },
}

SCSS

$custom: #4378e1;
$custom-light: #899eeb;
$custom-dark: #000000;

JSON

{
  "hex": "#4378e1",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 225
  },
  "hsl": {
    "h": 219.873,
    "s": 72.477,
    "l": 57.255
  },
  "oklch": {
    "l": 0.5911,
    "c": 0.16974,
    "h": 262.3
  },
  "luminance": 0.20062
}

Semantic roles & 50–950 ramp

primary

#4378E1

secondary

#E0CAA0

accent

#B239EF

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4378E1

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

Preview Lab → · Contrast checker → · Palette generator →