#4371BE#4371BE

#4371BE is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.4% C 0.131 H 260.1°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#4371BE
RGB	rgb(67, 113, 190)
HSL	hsl(218, 49%, 50%)
HSV	hsv(218, 65%, 75%)
CMYK	cmyk(64.7%, 40.5%, 0%, 25.5%)
CIE-LAB	lab(47.90, 9.06, -45.15)
CIE-LCH	lch(47.90, 46.05, 281.34°)
OKLab	oklab(55.36% -0.0224 -0.1286)
OKLCH	oklch(55.36% 0.131 260.1)
XYZ	xyz(17.5108, 16.7196, 51.0096)
Luminance	0.1672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4371BE #BE9043

analogous

#43AFBE #4371BE #5243BE

triadic

#4371BE #BE4371 #71BE43

tetradic

#4371BE #BE43AF #BE9043 #43BE52

square

#4371BE #BE43AF #BE9043 #43BE52

split-complementary

#4371BE #BE5243 #AFBE43

monochromatic

#233B64 #325691 #4371BE #7093CE #9EB6DD

Accessibility & contrast

On white

4.83

#4371BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#4371BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4371BE

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4371BE	#FFFFFF	#000000	##FFFFFF
##4371BE	1.00	4.83	4.34	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E78C1

Deuteranopia (green-blind)

#3C6CBC

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4371be;
/* rgb */ color: rgb(67, 113, 190);
/* oklch */ color: oklch(55.4% 0.131 260.1);

Tailwind

colors: {
  custom: {
    50: '#8399d2',
    500: '#4371be',
    950: '#000000',
  },
}

SCSS

$custom: #4371be;
$custom-light: #8399d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4371be",
  "rgb": {
    "r": 67,
    "g": 113,
    "b": 190
  },
  "hsl": {
    "h": 217.561,
    "s": 48.617,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55363,
    "c": 0.13051,
    "h": 260.1
  },
  "luminance": 0.16721
}

Semantic roles & 50–950 ramp

primary

#4371BE

secondary

#CAB593

accent

#A550D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4371BE

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

Preview Lab → · Contrast checker → · Palette generator →