#1F1F83#1F1F83

#1F1F83 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.3% C 0.161 H 272.8°. Best body text is #FFFFFF at 13.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F1F83
RGB	rgb(31, 31, 131)
HSL	hsl(240, 62%, 32%)
HSV	hsv(240, 76%, 51%)
CMYK	cmyk(76.3%, 76.3%, 0%, 48.6%)
CIE-LAB	lab(19.68, 35.43, -55.42)
CIE-LCH	lch(19.68, 65.77, 302.59°)
OKLab	oklab(32.26% 0.0078 -0.1604)
OKLCH	oklch(32.26% 0.161 272.8)
XYZ	xyz(5.1504, 2.9094, 21.7585)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1F83 #83831F

analogous

#1F5183 #1F1F83 #511F83

triadic

#1F1F83 #831F1F #1F831F

tetradic

#1F1F83 #831F51 #83831F #1F8351

square

#1F1F83 #831F51 #83831F #1F8351

split-complementary

#1F1F83 #83511F #51831F

monochromatic

#080820 #131352 #1F1F83 #2B2BB4 #4949D4

Accessibility & contrast

On white

13.27

#1F1F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F1F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1F83

13.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1F83	#FFFFFF	#000000	##FFFFFF
##1F1F83	1.00	13.27	1.58	13.27
#FFFFFF	13.27	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003486

Deuteranopia (green-blind)

#002B81

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f1f83;
/* rgb */ color: rgb(31, 31, 131);
/* oklch */ color: oklch(32.3% 0.161 272.8);

Tailwind

colors: {
  custom: {
    50: '#6c5ca8',
    500: '#1f1f83',
    950: '#000000',
  },
}

SCSS

$custom: #1f1f83;
$custom-light: #6c5ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1f83",
  "rgb": {
    "r": 31,
    "g": 31,
    "b": 131
  },
  "hsl": {
    "h": 240,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32262,
    "c": 0.16055,
    "h": 272.8
  },
  "luminance": 0.0291
}

Semantic roles & 50–950 ramp

primary

#1F1F83

secondary

#B6B648

accent

#E543E5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F1F83

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

Preview Lab → · Contrast checker → · Palette generator →