#4137CB#4137CB

#4137CB is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.5% C 0.217 H 276.4°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#4137CB
RGB	rgb(65, 55, 203)
HSL	hsl(244, 59%, 51%)
HSV	hsv(244, 73%, 80%)
CMYK	cmyk(68%, 72.9%, 0%, 20.4%)
CIE-LAB	lab(34.33, 49.14, -74.71)
CIE-LCH	lch(34.33, 89.42, 303.33°)
OKLab	oklab(45.5% 0.0241 -0.2159)
OKLCH	oklch(45.5% 0.217 276.4)
XYZ	xyz(14.3221, 8.1667, 57.3099)
Luminance	0.0817 (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

#4137CB #C1CB37

analogous

#3777CB #4137CB #8B37CB

triadic

#4137CB #CB4137 #37CB41

tetradic

#4137CB #CB3777 #C1CB37 #37CB8B

square

#4137CB #CB3777 #C1CB37 #37CB8B

split-complementary

#4137CB #CB8B37 #77CB37

monochromatic

#211C6C #30299C #4137CB #6F68D8 #9D98E4

Accessibility & contrast

On white

7.97

#4137CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#4137CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4137CB

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4137CB	#FFFFFF	#000000	##FFFFFF
##4137CB	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CF

Deuteranopia (green-blind)

#004AC8

Tritanopia (blue-blind)

#00617E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4137cb;
/* rgb */ color: rgb(65, 55, 203);
/* oklch */ color: oklch(45.5% 0.217 276.4);

Tailwind

colors: {
  custom: {
    50: '#8870dc',
    500: '#4137cb',
    950: '#000000',
  },
}

SCSS

$custom: #4137cb;
$custom-light: #8870dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4137cb",
  "rgb": {
    "r": 65,
    "g": 55,
    "b": 203
  },
  "hsl": {
    "h": 244.054,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45499,
    "c": 0.21723,
    "h": 276.4
  },
  "luminance": 0.08168
}

Semantic roles & 50–950 ramp

primary

#4137CB

secondary

#CBD08E

accent

#E246D7

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4137CB

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

Preview Lab → · Contrast checker → · Palette generator →