#4371DD#4371DD

#4371DD is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.4% C 0.173 H 264.3°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#4371DD
RGB	rgb(67, 113, 221)
HSL	hsl(222, 69%, 56%)
HSV	hsv(222, 70%, 87%)
CMYK	cmyk(69.7%, 48.9%, 0%, 13.3%)
CIE-LAB	lab(49.76, 20.08, -59.87)
CIE-LCH	lch(49.76, 63.15, 288.54°)
OKLab	oklab(57.39% -0.0172 -0.1718)
OKLCH	oklch(57.39% 0.173 264.3)
XYZ	xyz(21.2664, 18.2218, 70.7890)
Luminance	0.1822 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4371DD #DDAF43

analogous

#43BEDD #4371DD #6243DD

triadic

#4371DD #DD4371 #71DD43

tetradic

#4371DD #DD43BE #DDAF43 #43DD62

square

#4371DD #DD43BE #DDAF43 #43DD62

split-complementary

#4371DD #DD6243 #BEDD43

monochromatic

#193C8C #2352C0 #4371DD #7798E6 #ABBFF0

Accessibility & contrast

On white

4.52

#4371DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#4371DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4371DD

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4371DD	#FFFFFF	#000000	##000000
##4371DD	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#347EE1

Deuteranopia (green-blind)

#0070DB

Tritanopia (blue-blind)

#008A9C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4371dd;
/* rgb */ color: rgb(67, 113, 221);
/* oklch */ color: oklch(57.4% 0.173 264.3);

Tailwind

colors: {
  custom: {
    50: '#8999e8',
    500: '#4371dd',
    950: '#000000',
  },
}

SCSS

$custom: #4371dd;
$custom-light: #8999e8;
$custom-dark: #000000;

JSON

{
  "hex": "#4371dd",
  "rgb": {
    "r": 67,
    "g": 113,
    "b": 221
  },
  "hsl": {
    "h": 222.078,
    "s": 69.369,
    "l": 56.471
  },
  "oklch": {
    "l": 0.57392,
    "c": 0.1727,
    "h": 264.3
  },
  "luminance": 0.18224
}

Semantic roles & 50–950 ramp

primary

#4371DD

secondary

#DECB9E

accent

#B73CEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4371DD

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

Preview Lab → · Contrast checker → · Palette generator →