#4148CB#4148CB

#4148CB is a mid, vivid blue. Relative luminance 0.101; OKLCH L 48.1% C 0.199 H 273.8°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#4148CB
RGB	rgb(65, 72, 203)
HSL	hsl(237, 57%, 53%)
HSV	hsv(237, 68%, 80%)
CMYK	cmyk(68%, 64.5%, 0%, 20.4%)
CIE-LAB	lab(37.97, 39.22, -68.73)
CIE-LCH	lch(37.97, 79.14, 299.71°)
OKLab	oklab(48.12% 0.0131 -0.1984)
OKLCH	oklch(48.12% 0.199 273.8)
XYZ	xyz(15.2732, 10.0689, 57.6269)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4148CB #CBC441

analogous

#418DCB #4148CB #7F41CB

triadic

#4148CB #CB4148 #48CB41

tetradic

#4148CB #CB418D #CBC441 #41CB7F

square

#4148CB #CB418D #CBC441 #41CB7F

split-complementary

#4148CB #CB7F41 #8DCB41

monochromatic

#1F2372 #2C32A2 #4148CB #7176D8 #A1A5E5

Accessibility & contrast

On white

6.97

#4148CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#4148CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4148CB

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4148CB	#FFFFFF	#000000	##FFFFFF
##4148CB	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060CF

Deuteranopia (green-blind)

#0053C8

Tritanopia (blue-blind)

#006A83

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4148cb;
/* rgb */ color: rgb(65, 72, 203);
/* oklch */ color: oklch(48.1% 0.199 273.8);

Tailwind

colors: {
  custom: {
    50: '#877bdc',
    500: '#4148cb',
    950: '#000000',
  },
}

SCSS

$custom: #4148cb;
$custom-light: #877bdc;
$custom-dark: #000000;

JSON

{
  "hex": "#4148cb",
  "rgb": {
    "r": 65,
    "g": 72,
    "b": 203
  },
  "hsl": {
    "h": 236.957,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.4812,
    "c": 0.19885,
    "h": 273.8
  },
  "luminance": 0.1007
}

Semantic roles & 50–950 ramp

primary

#4148CB

secondary

#D2CF96

accent

#D948E0

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4148CB

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

Preview Lab → · Contrast checker → · Palette generator →