#4171DB#4171DB

#4171DB is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.2% C 0.171 H 263.6°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#4171DB
RGB	rgb(65, 113, 219)
HSL	hsl(221, 68%, 56%)
HSV	hsv(221, 70%, 86%)
CMYK	cmyk(70.3%, 48.4%, 0%, 14.1%)
CIE-LAB	lab(49.55, 19.08, -59.09)
CIE-LCH	lch(49.55, 62.09, 287.89°)
OKLab	oklab(57.17% -0.019 -0.1696)
OKLCH	oklch(57.17% 0.171 263.6)
XYZ	xyz(20.8668, 18.0464, 69.3877)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4171DB #DBAB41

analogous

#41BEDB #4171DB #5E41DB

triadic

#4171DB #DB4171 #71DB41

tetradic

#4171DB #DB41BE #DBAB41 #41DB5E

square

#4171DB #DB41BE #DBAB41 #41DB5E

split-complementary

#4171DB #DB5E41 #BEDB41

monochromatic

#1A3C88 #2353BB #4171DB #7497E5 #A8BEEE

Accessibility & contrast

On white

4.56

#4171DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#4171DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4171DB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4171DB	#FFFFFF	#000000	##000000
##4171DB	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#367DDF

Deuteranopia (green-blind)

#006FD9

Tritanopia (blue-blind)

#008A9B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4171db;
/* rgb */ color: rgb(65, 113, 219);
/* oklch */ color: oklch(57.2% 0.171 263.6);

Tailwind

colors: {
  custom: {
    50: '#8899e7',
    500: '#4171db',
    950: '#000000',
  },
}

SCSS

$custom: #4171db;
$custom-light: #8899e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4171db",
  "rgb": {
    "r": 65,
    "g": 113,
    "b": 219
  },
  "hsl": {
    "h": 221.299,
    "s": 68.142,
    "l": 55.686
  },
  "oklch": {
    "l": 0.57166,
    "c": 0.17062,
    "h": 263.6
  },
  "luminance": 0.18049
}

Semantic roles & 50–950 ramp

primary

#4171DB

secondary

#DCC89C

accent

#B53DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4171DB

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

Preview Lab → · Contrast checker → · Palette generator →