#4171BF#4171BF

#4171BF is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.3% C 0.133 H 259.6°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#4171BF
RGB	rgb(65, 113, 191)
HSL	hsl(217, 50%, 50%)
HSV	hsv(217, 66%, 75%)
CMYK	cmyk(66%, 40.8%, 0%, 25.1%)
CIE-LAB	lab(47.87, 9.06, -45.79)
CIE-LCH	lch(47.87, 46.67, 281.19°)
OKLab	oklab(55.33% -0.0238 -0.1305)
OKLCH	oklch(55.33% 0.133 259.6)
XYZ	xyz(17.4857, 16.6940, 51.5809)
Luminance	0.1670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4171BF #BF8F41

analogous

#41B0BF #4171BF #5041BF

triadic

#4171BF #BF4171 #71BF41

tetradic

#4171BF #BF41B0 #BF8F41 #41BF50

square

#4171BF #BF41B0 #BF8F41 #41BF50

split-complementary

#4171BF #BF5041 #B0BF41

monochromatic

#223B64 #315692 #4171BF #6F93CE #9DB5DE

Accessibility & contrast

On white

4.84

#4171BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#4171BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4171BF

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4171BF	#FFFFFF	#000000	##FFFFFF
##4171BF	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D78C2

Deuteranopia (green-blind)

#3A6CBD

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4171bf;
/* rgb */ color: rgb(65, 113, 191);
/* oklch */ color: oklch(55.3% 0.133 259.6);

Tailwind

colors: {
  custom: {
    50: '#8299d3',
    500: '#4171bf',
    950: '#000000',
  },
}

SCSS

$custom: #4171bf;
$custom-light: #8299d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4171bf",
  "rgb": {
    "r": 65,
    "g": 113,
    "b": 191
  },
  "hsl": {
    "h": 217.143,
    "s": 49.606,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55331,
    "c": 0.13262,
    "h": 259.6
  },
  "luminance": 0.16696
}

Semantic roles & 50–950 ramp

primary

#4171BF

secondary

#CAB592

accent

#A44FD9

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #4171BF

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

Preview Lab → · Contrast checker → · Palette generator →