#4173CF#4173CF

#4173CF is a mid, vivid blue. Relative luminance 0.179; OKLCH L 56.8% C 0.152 H 261.4°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#4173CF
RGB	rgb(65, 115, 207)
HSL	hsl(219, 60%, 53%)
HSV	hsv(219, 69%, 81%)
CMYK	cmyk(68.6%, 44.4%, 0%, 18.8%)
CIE-LAB	lab(49.36, 13.52, -52.58)
CIE-LCH	lch(49.36, 54.29, 284.42°)
OKLab	oklab(56.78% -0.0227 -0.1504)
OKLCH	oklch(56.78% 0.152 261.4)
XYZ	xyz(19.5692, 17.8883, 61.4409)
Luminance	0.1789 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4173CF #CF9D41

analogous

#41BACF #4173CF #5641CF

triadic

#4173CF #CF4173 #73CF41

tetradic

#4173CF #CF41BA #CF9D41 #41CF56

square

#4173CF #CF41BA #CF9D41 #41CF56

split-complementary

#4173CF #CF5641 #BACF41

monochromatic

#1E3E77 #2B57A8 #4173CF #7297DB #A3BBE8

Accessibility & contrast

On white

4.59

#4173CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#4173CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4173CF

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4173CF	#FFFFFF	#000000	##FFFFFF
##4173CF	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#467CD3

Deuteranopia (green-blind)

#2C6FCD

Tritanopia (blue-blind)

#008897

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4173cf;
/* rgb */ color: rgb(65, 115, 207);
/* oklch */ color: oklch(56.8% 0.152 261.4);

Tailwind

colors: {
  custom: {
    50: '#859ade',
    500: '#4173cf',
    950: '#000000',
  },
}

SCSS

$custom: #4173cf;
$custom-light: #859ade;
$custom-dark: #000000;

JSON

{
  "hex": "#4173cf",
  "rgb": {
    "r": 65,
    "g": 115,
    "b": 207
  },
  "hsl": {
    "h": 218.873,
    "s": 59.664,
    "l": 53.333
  },
  "oklch": {
    "l": 0.56781,
    "c": 0.15209,
    "h": 261.4
  },
  "luminance": 0.1789
}

Semantic roles & 50–950 ramp

primary

#4173CF

secondary

#D4BF97

accent

#AB45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4173CF

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

Preview Lab → · Contrast checker → · Palette generator →