#4378EF#4378EF

#4378EF is a mid, vivid blue. Relative luminance 0.209; OKLCH L 60.1% C 0.188 H 263.7°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#4378EF
RGB	rgb(67, 120, 239)
HSL	hsl(222, 84%, 60%)
HSV	hsv(222, 72%, 94%)
CMYK	cmyk(72%, 49.8%, 0%, 6.3%)
CIE-LAB	lab(52.79, 22.15, -65.10)
CIE-LCH	lch(52.79, 68.76, 288.79°)
OKLab	oklab(60.07% -0.0208 -0.1871)
OKLCH	oklch(60.07% 0.188 263.7)
XYZ	xyz(24.6057, 20.8556, 84.3734)
Luminance	0.2086 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378EF #EFBA43

analogous

#43CEEF #4378EF #6443EF

triadic

#4378EF #EF4378 #78EF43

tetradic

#4378EF #EF43CE #EFBA43 #43EF64

square

#4378EF #EF43CE #EFBA43 #43EF64

split-complementary

#4378EF #EF6443 #CEEF43

monochromatic

#0E3EA9 #1353E2 #4378EF #7BA0F4 #B4C9F9

Accessibility & contrast

On white

4.06

#4378EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#4378EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378EF

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378EF	#FFFFFF	#000000	##000000
##4378EF	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3086F3

Deuteranopia (green-blind)

#0077ED

Tritanopia (blue-blind)

#0094A8

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4378ef;
/* rgb */ color: rgb(67, 120, 239);
/* oklch */ color: oklch(60.1% 0.188 263.7);

Tailwind

colors: {
  custom: {
    50: '#8c9ef5',
    500: '#4378ef',
    950: '#000000',
  },
}

SCSS

$custom: #4378ef;
$custom-light: #8c9ef5;
$custom-dark: #000000;

JSON

{
  "hex": "#4378ef",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 239
  },
  "hsl": {
    "h": 221.512,
    "s": 84.314,
    "l": 60
  },
  "oklch": {
    "l": 0.60071,
    "c": 0.18824,
    "h": 263.7
  },
  "luminance": 0.20858
}

Semantic roles & 50–950 ramp

primary

#4378EF

secondary

#E8D4A6

accent

#BB2DFB

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #4378EF

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

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