#4171CB#4171CB

#4171CB is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.1% C 0.149 H 261.7°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4171CB
RGB	rgb(65, 113, 203)
HSL	hsl(219, 57%, 53%)
HSV	hsv(219, 68%, 80%)
CMYK	cmyk(68%, 44.3%, 0%, 20.4%)
CIE-LAB	lab(48.57, 13.34, -51.57)
CIE-LCH	lch(48.57, 53.26, 284.50°)
OKLab	oklab(56.09% -0.0215 -0.1474)
OKLCH	oklch(56.09% 0.149 261.7)
XYZ	xyz(18.8608, 17.2440, 58.8228)
Luminance	0.1725 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4171CB #CB9B41

analogous

#41B6CB #4171CB #5641CB

triadic

#4171CB #CB4171 #71CB41

tetradic

#4171CB #CB41B6 #CB9B41 #41CB56

square

#4171CB #CB41B6 #CB9B41 #41CB56

split-complementary

#4171CB #CB5641 #B6CB41

monochromatic

#1F3C72 #2C55A2 #4171CB #7195D8 #A1B9E5

Accessibility & contrast

On white

4.72

#4171CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#4171CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4171CB

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4171CB	#FFFFFF	#000000	##FFFFFF
##4171CB	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#457ACE

Deuteranopia (green-blind)

#2C6DC9

Tritanopia (blue-blind)

#008694

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4171cb;
/* rgb */ color: rgb(65, 113, 203);
/* oklch */ color: oklch(56.1% 0.149 261.7);

Tailwind

colors: {
  custom: {
    50: '#8599db',
    500: '#4171cb',
    950: '#000000',
  },
}

SCSS

$custom: #4171cb;
$custom-light: #8599db;
$custom-dark: #000000;

JSON

{
  "hex": "#4171cb",
  "rgb": {
    "r": 65,
    "g": 113,
    "b": 203
  },
  "hsl": {
    "h": 219.13,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56092,
    "c": 0.149,
    "h": 261.7
  },
  "luminance": 0.17246
}

Semantic roles & 50–950 ramp

primary

#4171CB

secondary

#D2BD96

accent

#AB48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4171CB

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

Preview Lab → · Contrast checker → · Palette generator →