#4378FF#4378FF

#4378FF is a mid, highly saturated blue. Relative luminance 0.218; OKLCH L 61.2% C 0.209 H 264.7°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#4378FF
RGB	rgb(67, 120, 255)
HSL	hsl(223, 100%, 63%)
HSV	hsv(223, 74%, 100%)
CMYK	cmyk(73.7%, 52.9%, 0%, 0%)
CIE-LAB	lab(53.86, 27.87, -72.24)
CIE-LCH	lch(53.86, 77.43, 291.09°)
OKLab	oklab(61.22% -0.0192 -0.2081)
OKLCH	oklch(61.22% 0.209 264.7)
XYZ	xyz(27.0748, 21.8432, 97.3776)
Luminance	0.2185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378FF #FFCA43

analogous

#43D6FF #4378FF #6C43FF

triadic

#4378FF #FF4378 #78FF43

tetradic

#4378FF #FF43D6 #FFCA43 #43FF6C

square

#4378FF #FF43D6 #FFCA43 #43FF6C

split-complementary

#4378FF #FF6C43 #D6FF43

monochromatic

#0038C8 #064CFF #4378FF #80A4FF #BDD0FF

Accessibility & contrast

On white

3.91

#4378FF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#4378FF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378FF

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378FF	#FFFFFF	#000000	##000000
##4378FF	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#058AFF

Deuteranopia (green-blind)

#0078FC

Tritanopia (blue-blind)

#0099B0

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4378ff;
/* rgb */ color: rgb(67, 120, 255);
/* oklch */ color: oklch(61.2% 0.209 264.7);

Tailwind

colors: {
  custom: {
    50: '#8f9eff',
    500: '#4378ff',
    950: '#000000',
  },
}

SCSS

$custom: #4378ff;
$custom-light: #8f9eff;
$custom-dark: #000000;

JSON

{
  "hex": "#4378ff",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 255
  },
  "hsl": {
    "h": 223.085,
    "s": 100,
    "l": 63.137
  },
  "oklch": {
    "l": 0.61223,
    "c": 0.20901,
    "h": 264.7
  },
  "luminance": 0.21846
}

Semantic roles & 50–950 ramp

primary

#4378FF

secondary

#F1DEAD

accent

#A500E6

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E18

muted

#7E7E86

Preview Lab

Preview with #4378FF

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

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