#1F1584#1F1584

#1F1584 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.0% C 0.171 H 273.9°. Best body text is #FFFFFF at 14.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F1584
RGB	rgb(31, 21, 132)
HSL	hsl(245, 73%, 30%)
HSV	hsv(245, 84%, 52%)
CMYK	cmyk(76.5%, 84.1%, 0%, 48.2%)
CIE-LAB	lab(17.89, 41.24, -59.01)
CIE-LCH	lch(17.89, 71.99, 304.95°)
OKLab	oklab(31.04% 0.0118 -0.1707)
OKLCH	oklch(31.04% 0.171 273.9)
XYZ	xyz(4.9967, 2.4931, 22.0432)
Luminance	0.0249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1584 #7A8415

analogous

#154384 #1F1584 #561584

triadic

#1F1584 #841F15 #15841F

tetradic

#1F1584 #841543 #7A8415 #158456

square

#1F1584 #841543 #7A8415 #158456

split-complementary

#1F1584 #845615 #438415

monochromatic

#06041A #130D4F #1F1584 #2B1DB9 #4435DF

Accessibility & contrast

On white

14.01

#1F1584 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1F1584 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1584

14.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1584	#FFFFFF	#000000	##FFFFFF
##1F1584	1.00	14.01	1.50	14.01
#FFFFFF	14.01	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003187

Deuteranopia (green-blind)

#002682

Tritanopia (blue-blind)

#00384E

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f1584;
/* rgb */ color: rgb(31, 21, 132);
/* oklch */ color: oklch(31.0% 0.171 273.9);

Tailwind

colors: {
  custom: {
    50: '#6e56a9',
    500: '#1f1584',
    950: '#000000',
  },
}

SCSS

$custom: #1f1584;
$custom-light: #6e56a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1584",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 132
  },
  "hsl": {
    "h": 245.405,
    "s": 72.549,
    "l": 30
  },
  "oklch": {
    "l": 0.31041,
    "c": 0.17106,
    "h": 273.9
  },
  "luminance": 0.02494
}

Semantic roles & 50–950 ramp

primary

#1F1584

secondary

#ADB93C

accent

#EF39DF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1F1584

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

Preview Lab → · Contrast checker → · Palette generator →