#4173CB#4173CB

#4173CB is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.147 H 260.8°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#4173CB
RGB	rgb(65, 115, 203)
HSL	hsl(218, 57%, 53%)
HSV	hsv(218, 68%, 80%)
CMYK	cmyk(68%, 43.3%, 0%, 20.4%)
CIE-LAB	lab(49.12, 12.09, -50.68)
CIE-LCH	lch(49.12, 52.10, 283.42°)
OKLab	oklab(56.52% -0.0234 -0.1448)
OKLCH	oklch(56.52% 0.147 260.8)
XYZ	xyz(19.0864, 17.6952, 58.8980)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4173CB #CB9941

analogous

#41B8CB #4173CB #5441CB

triadic

#4173CB #CB4173 #73CB41

tetradic

#4173CB #CB41B8 #CB9941 #41CB54

square

#4173CB #CB41B8 #CB9941 #41CB54

split-complementary

#4173CB #CB5441 #B8CB41

monochromatic

#1F3D72 #2C57A2 #4173CB #7196D8 #A1BAE5

Accessibility & contrast

On white

4.63

#4173CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#4173CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4173CB

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4173CB	#FFFFFF	#000000	##FFFFFF
##4173CB	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#497CCE

Deuteranopia (green-blind)

#316FC9

Tritanopia (blue-blind)

#008795

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4173cb;
/* rgb */ color: rgb(65, 115, 203);
/* oklch */ color: oklch(56.5% 0.147 260.8);

Tailwind

colors: {
  custom: {
    50: '#849adb',
    500: '#4173cb',
    950: '#000000',
  },
}

SCSS

$custom: #4173cb;
$custom-light: #849adb;
$custom-dark: #000000;

JSON

{
  "hex": "#4173cb",
  "rgb": {
    "r": 65,
    "g": 115,
    "b": 203
  },
  "hsl": {
    "h": 218.261,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56522,
    "c": 0.14667,
    "h": 260.8
  },
  "luminance": 0.17697
}

Semantic roles & 50–950 ramp

primary

#4173CB

secondary

#D2BC96

accent

#A948E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4173CB

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

Preview Lab → · Contrast checker → · Palette generator →