#4173BF#4173BF

#4173BF is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.8% C 0.130 H 258.6°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4173BF
RGB	rgb(65, 115, 191)
HSL	hsl(216, 50%, 50%)
HSV	hsv(216, 66%, 75%)
CMYK	cmyk(66%, 39.8%, 0%, 25.1%)
CIE-LAB	lab(48.44, 7.82, -44.88)
CIE-LCH	lch(48.44, 45.55, 279.88°)
OKLab	oklab(55.77% -0.0258 -0.1278)
OKLCH	oklch(55.77% 0.13 258.6)
XYZ	xyz(17.7113, 17.1451, 51.6561)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4173BF #BF8D41

analogous

#41B2BF #4173BF #4E41BF

triadic

#4173BF #BF4173 #73BF41

tetradic

#4173BF #BF41B2 #BF8D41 #41BF4E

square

#4173BF #BF41B2 #BF8D41 #41BF4E

split-complementary

#4173BF #BF4E41 #B2BF41

monochromatic

#223C64 #315792 #4173BF #6F95CE #9DB6DE

Accessibility & contrast

On white

4.74

#4173BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#4173BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4173BF

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4173BF	#FFFFFF	#000000	##FFFFFF
##4173BF	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5179C2

Deuteranopia (green-blind)

#3E6EBD

Tritanopia (blue-blind)

#008490

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4173bf;
/* rgb */ color: rgb(65, 115, 191);
/* oklch */ color: oklch(55.8% 0.130 258.6);

Tailwind

colors: {
  custom: {
    50: '#829ad3',
    500: '#4173bf',
    950: '#000000',
  },
}

SCSS

$custom: #4173bf;
$custom-light: #829ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#4173bf",
  "rgb": {
    "r": 65,
    "g": 115,
    "b": 191
  },
  "hsl": {
    "h": 216.19,
    "s": 49.606,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55774,
    "c": 0.13036,
    "h": 258.6
  },
  "luminance": 0.17147
}

Semantic roles & 50–950 ramp

primary

#4173BF

secondary

#CAB492

accent

#A24FD9

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4173BF

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

Preview Lab → · Contrast checker → · Palette generator →