#1F1C91#1F1C91

#1F1C91 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.5% C 0.181 H 271.9°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#1F1C91
RGB	rgb(31, 28, 145)
HSL	hsl(242, 68%, 34%)
HSV	hsv(242, 81%, 57%)
CMYK	cmyk(78.6%, 80.7%, 0%, 43.1%)
CIE-LAB	lab(20.69, 41.90, -62.50)
CIE-LCH	lch(20.69, 75.24, 303.84°)
OKLab	oklab(33.45% 0.0061 -0.1809)
OKLCH	oklch(33.45% 0.181 271.9)
XYZ	xyz(6.0894, 3.1655, 27.0726)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1C91 #8E911C

analogous

#1C5491 #1F1C91 #5A1C91

triadic

#1F1C91 #911F1C #1C911F

tetradic

#1F1C91 #911C54 #8E911C #1C915A

square

#1F1C91 #911C54 #8E911C #1C915A

split-complementary

#1F1C91 #915A1C #54911C

monochromatic

#09082A #14125E #1F1C91 #2A26C4 #4F4BDC

Accessibility & contrast

On white

12.86

#1F1C91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1F1C91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1C91

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1C91	#FFFFFF	#000000	##FFFFFF
##1F1C91	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003794

Deuteranopia (green-blind)

#002C8F

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f1c91;
/* rgb */ color: rgb(31, 28, 145);
/* oklch */ color: oklch(33.5% 0.181 271.9);

Tailwind

colors: {
  custom: {
    50: '#705bb3',
    500: '#1f1c91',
    950: '#000000',
  },
}

SCSS

$custom: #1f1c91;
$custom-light: #705bb3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1c91",
  "rgb": {
    "r": 31,
    "g": 28,
    "b": 145
  },
  "hsl": {
    "h": 241.538,
    "s": 67.63,
    "l": 33.922
  },
  "oklch": {
    "l": 0.33453,
    "c": 0.18099,
    "h": 271.9
  },
  "luminance": 0.03166
}

Semantic roles & 50–950 ramp

primary

#1F1C91

secondary

#BBBE4A

accent

#EB3DE6

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1F1C91

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

Preview Lab → · Contrast checker → · Palette generator →