#4138BB#4138BB

#4138BB is a dark, vivid blue. Relative luminance 0.075; OKLCH L 44.1% C 0.197 H 277.7°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#4138BB
RGB	rgb(65, 56, 187)
HSL	hsl(244, 54%, 48%)
HSV	hsv(244, 70%, 73%)
CMYK	cmyk(65.2%, 70.1%, 0%, 26.7%)
CIE-LAB	lab(33.00, 43.46, -67.51)
CIE-LCH	lch(33.00, 80.29, 302.77°)
OKLab	oklab(44.09% 0.0263 -0.1949)
OKLCH	oklch(44.09% 0.197 277.7)
XYZ	xyz(12.5609, 7.5390, 47.7973)
Luminance	0.0754 (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

#4138BB #B2BB38

analogous

#3871BB #4138BB #8238BB

triadic

#4138BB #BB4138 #38BB41

tetradic

#4138BB #BB3871 #B2BB38 #38BB82

square

#4138BB #BB3871 #B2BB38 #38BB82

split-complementary

#4138BB #BB8238 #71BB38

monochromatic

#201C5D #312A8C #4138BB #6861D0 #9590DE

Accessibility & contrast

On white

8.37

#4138BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#4138BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4138BB

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4138BB	#FFFFFF	#000000	##FFFFFF
##4138BB	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0048B9

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4138bb;
/* rgb */ color: rgb(65, 56, 187);
/* oklch */ color: oklch(44.1% 0.197 277.7);

Tailwind

colors: {
  custom: {
    50: '#8570d1',
    500: '#4138bb',
    950: '#000000',
  },
}

SCSS

$custom: #4138bb;
$custom-light: #8570d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4138bb",
  "rgb": {
    "r": 65,
    "g": 56,
    "b": 187
  },
  "hsl": {
    "h": 244.122,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44093,
    "c": 0.19663,
    "h": 277.7
  },
  "luminance": 0.0754
}

Semantic roles & 50–950 ramp

primary

#4138BB

secondary

#C4C886

accent

#DD4BD3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #4138BB

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

Preview Lab → · Contrast checker → · Palette generator →