#1F1373#1F1373

#1F1373 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.8% C 0.152 H 276.6°. Best body text is #FFFFFF at 15.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F1373
RGB	rgb(31, 19, 115)
HSL	hsl(248, 72%, 26%)
HSV	hsv(248, 83%, 45%)
CMYK	cmyk(73%, 83.5%, 0%, 54.9%)
CIE-LAB	lab(15.46, 36.73, -52.17)
CIE-LCH	lch(15.46, 63.80, 305.15°)
OKLab	oklab(28.75% 0.0175 -0.1508)
OKLCH	oklch(28.75% 0.152 276.6)
XYZ	xyz(3.8914, 1.9945, 16.3962)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1373 #677313

analogous

#133773 #1F1373 #4F1373

triadic

#1F1373 #731F13 #13731F

tetradic

#1F1373 #731337 #677313 #13734F

square

#1F1373 #731337 #677313 #13734F

split-complementary

#1F1373 #734F13 #377313

monochromatic

#07041A #110A3E #1F1373 #2D1CA8 #3C25DB

Accessibility & contrast

On white

15.01

#1F1373 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1F1373 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1373

15.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1373	#FFFFFF	#000000	##FFFFFF
##1F1373	1.00	15.01	1.40	15.01
#FFFFFF	15.01	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B76

Deuteranopia (green-blind)

#002271

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f1373;
/* rgb */ color: rgb(31, 19, 115);
/* oklch */ color: oklch(28.8% 0.152 276.6);

Tailwind

colors: {
  custom: {
    50: '#6a549c',
    500: '#1f1373',
    950: '#000000',
  },
}

SCSS

$custom: #1f1373;
$custom-light: #6a549c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1373",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 115
  },
  "hsl": {
    "h": 247.5,
    "s": 71.642,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28751,
    "c": 0.15178,
    "h": 276.6
  },
  "luminance": 0.01995
}

Semantic roles & 50–950 ramp

primary

#1F1373

secondary

#9BAA38

accent

#EE39D8

background

#F6F4F9

surface

#ECE8F2

border

#C7C4CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F1373

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

Preview Lab → · Contrast checker → · Palette generator →