#4139BC#4139BC

#4139BC is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.3% C 0.197 H 277.4°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#4139BC
RGB	rgb(65, 57, 188)
HSL	hsl(244, 53%, 48%)
HSV	hsv(244, 70%, 74%)
CMYK	cmyk(65.4%, 69.7%, 0%, 26.3%)
CIE-LAB	lab(33.31, 43.20, -67.60)
CIE-LCH	lch(33.31, 80.23, 302.58°)
OKLab	oklab(44.34% 0.0254 -0.1951)
OKLCH	oklch(44.34% 0.197 277.4)
XYZ	xyz(12.7173, 7.6798, 48.3794)
Luminance	0.0768 (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

#4139BC #B4BC39

analogous

#3972BC #4139BC #8239BC

triadic

#4139BC #BC4139 #39BC41

tetradic

#4139BC #BC3972 #B4BC39 #39BC82

square

#4139BC #BC3972 #B4BC39 #39BC82

split-complementary

#4139BC #BC8239 #72BC39

monochromatic

#211D5E #312B8D #4139BC #6963D0 #9692DE

Accessibility & contrast

On white

8.28

#4139BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#4139BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4139BC

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4139BC	#FFFFFF	#000000	##FFFFFF
##4139BC	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C0

Deuteranopia (green-blind)

#0049BA

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4139bc;
/* rgb */ color: rgb(65, 57, 188);
/* oklch */ color: oklch(44.3% 0.197 277.4);

Tailwind

colors: {
  custom: {
    50: '#8571d1',
    500: '#4139bc',
    950: '#000000',
  },
}

SCSS

$custom: #4139bc;
$custom-light: #8571d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4139bc",
  "rgb": {
    "r": 65,
    "g": 57,
    "b": 188
  },
  "hsl": {
    "h": 243.664,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44339,
    "c": 0.19679,
    "h": 277.4
  },
  "luminance": 0.07681
}

Semantic roles & 50–950 ramp

primary

#4139BC

secondary

#C5C988

accent

#DD4BD4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4139BC

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

Preview Lab → · Contrast checker → · Palette generator →