#4378D7#4378D7

#4378D7 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.5% C 0.156 H 261.1°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#4378D7
RGB	rgb(67, 120, 215)
HSL	hsl(219, 65%, 55%)
HSV	hsv(219, 69%, 84%)
CMYK	cmyk(68.8%, 44.2%, 0%, 15.7%)
CIE-LAB	lab(51.30, 13.57, -54.01)
CIE-LCH	lch(51.30, 55.69, 284.11°)
OKLab	oklab(58.45% -0.0243 -0.1545)
OKLCH	oklch(58.45% 0.156 261.1)
XYZ	xyz(21.2926, 19.5303, 66.9244)
Luminance	0.1953 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378D7 #D7A243

analogous

#43C2D7 #4378D7 #5843D7

triadic

#4378D7 #D74378 #78D743

tetradic

#4378D7 #D743C2 #D7A243 #43D758

square

#4378D7 #D743C2 #D7A243 #43D758

split-complementary

#4378D7 #D75843 #C2D743

monochromatic

#1C4184 #275AB6 #4378D7 #759CE2 #A8C0EC

Accessibility & contrast

On white

4.28

#4378D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#4378D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378D7

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378D7	#FFFFFF	#000000	##000000
##4378D7	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4982DB

Deuteranopia (green-blind)

#2E74D5

Tritanopia (blue-blind)

#008E9D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4378d7;
/* rgb */ color: rgb(67, 120, 215);
/* oklch */ color: oklch(58.5% 0.156 261.1);

Tailwind

colors: {
  custom: {
    50: '#879ee4',
    500: '#4378d7',
    950: '#000000',
  },
}

SCSS

$custom: #4378d7;
$custom-light: #879ee4;
$custom-dark: #000000;

JSON

{
  "hex": "#4378d7",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 215
  },
  "hsl": {
    "h": 218.514,
    "s": 64.912,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58452,
    "c": 0.15638,
    "h": 261.1
  },
  "luminance": 0.19533
}

Semantic roles & 50–950 ramp

primary

#4378D7

secondary

#DAC49C

accent

#AC40E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E15

muted

#7D7E84

Preview Lab

Preview with #4378D7

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

Preview Lab → · Contrast checker → · Palette generator →