#1F1D83#1F1D83

#1F1D83 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.163 H 273.1°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D83
RGB	rgb(31, 29, 131)
HSL	hsl(241, 64%, 31%)
HSV	hsv(241, 78%, 51%)
CMYK	cmyk(76.3%, 77.9%, 0%, 48.6%)
CIE-LAB	lab(19.26, 36.61, -56.11)
CIE-LCH	lch(19.26, 66.99, 303.12°)
OKLab	oklab(31.97% 0.0088 -0.1623)
OKLCH	oklch(31.97% 0.163 273.1)
XYZ	xyz(5.0998, 2.8082, 21.7416)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D83 #81831D

analogous

#1D4E83 #1F1D83 #521D83

triadic

#1F1D83 #831F1D #1D831F

tetradic

#1F1D83 #831D4E #81831D #1D8352

square

#1F1D83 #831D4E #81831D #1D8352

split-complementary

#1F1D83 #83521D #4E831D

monochromatic

#07071F #131251 #1F1D83 #2B28B5 #4745D6

Accessibility & contrast

On white

13.45

#1F1D83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1F1D83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D83

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D83	#FFFFFF	#000000	##FFFFFF
##1F1D83	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003486

Deuteranopia (green-blind)

#002A81

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f1d83;
/* rgb */ color: rgb(31, 29, 131);
/* oklch */ color: oklch(32.0% 0.163 273.1);

Tailwind

colors: {
  custom: {
    50: '#6d5ba8',
    500: '#1f1d83',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d83;
$custom-light: #6d5ba8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d83",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 131
  },
  "hsl": {
    "h": 241.176,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31966,
    "c": 0.16259,
    "h": 273.1
  },
  "luminance": 0.02809
}

Semantic roles & 50–950 ramp

primary

#1F1D83

secondary

#B4B646

accent

#E741E4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F1D83

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

Preview Lab → · Contrast checker → · Palette generator →