#4173DB#4173DB

#4173DB is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.6% C 0.168 H 262.9°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#4173DB
RGB	rgb(65, 115, 219)
HSL	hsl(221, 68%, 56%)
HSV	hsv(221, 70%, 86%)
CMYK	cmyk(70.3%, 47.5%, 0%, 14.1%)
CIE-LAB	lab(50.09, 17.83, -58.22)
CIE-LCH	lch(50.09, 60.88, 287.02°)
OKLab	oklab(57.58% -0.0208 -0.167)
OKLCH	oklch(57.58% 0.168 262.9)
XYZ	xyz(21.0924, 18.4976, 69.4629)
Luminance	0.1850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4173DB #DBA941

analogous

#41C0DB #4173DB #5C41DB

triadic

#4173DB #DB4173 #73DB41

tetradic

#4173DB #DB41C0 #DBA941 #41DB5C

square

#4173DB #DB41C0 #DBA941 #41DB5C

split-complementary

#4173DB #DB5C41 #C0DB41

monochromatic

#1A3D88 #2355BB #4173DB #7499E5 #A8BFEE

Accessibility & contrast

On white

4.47

#4173DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#4173DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4173DB

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4173DB	#FFFFFF	#000000	##000000
##4173DB	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7FDF

Deuteranopia (green-blind)

#1171D9

Tritanopia (blue-blind)

#008B9C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4173db;
/* rgb */ color: rgb(65, 115, 219);
/* oklch */ color: oklch(57.6% 0.168 262.9);

Tailwind

colors: {
  custom: {
    50: '#879ae7',
    500: '#4173db',
    950: '#000000',
  },
}

SCSS

$custom: #4173db;
$custom-light: #879ae7;
$custom-dark: #000000;

JSON

{
  "hex": "#4173db",
  "rgb": {
    "r": 65,
    "g": 115,
    "b": 219
  },
  "hsl": {
    "h": 220.519,
    "s": 68.142,
    "l": 55.686
  },
  "oklch": {
    "l": 0.5758,
    "c": 0.16825,
    "h": 262.9
  },
  "luminance": 0.185
}

Semantic roles & 50–950 ramp

primary

#4173DB

secondary

#DCC79C

accent

#B23DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4173DB

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

Preview Lab → · Contrast checker → · Palette generator →