#1F1784#1F1784

#1F1784 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.3% C 0.169 H 273.7°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#1F1784
RGB	rgb(31, 23, 132)
HSL	hsl(244, 70%, 30%)
HSV	hsv(244, 83%, 52%)
CMYK	cmyk(76.5%, 82.6%, 0%, 48.2%)
CIE-LAB	lab(18.23, 40.24, -58.44)
CIE-LCH	lch(18.23, 70.95, 304.55°)
OKLab	oklab(31.28% 0.0111 -0.169)
OKLCH	oklch(31.28% 0.169 273.7)
XYZ	xyz(5.0349, 2.5695, 22.0559)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1784 #7C8417

analogous

#174584 #1F1784 #561784

triadic

#1F1784 #841F17 #17841F

tetradic

#1F1784 #841745 #7C8417 #178456

square

#1F1784 #841745 #7C8417 #178456

split-complementary

#1F1784 #845617 #458417

monochromatic

#07051C #130E50 #1F1784 #2B20B8 #4539DC

Accessibility & contrast

On white

13.87

#1F1784 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1F1784 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1784

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1784	#FFFFFF	#000000	##FFFFFF
##1F1784	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003187

Deuteranopia (green-blind)

#002782

Tritanopia (blue-blind)

#00394E

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f1784;
/* rgb */ color: rgb(31, 23, 132);
/* oklch */ color: oklch(31.3% 0.169 273.7);

Tailwind

colors: {
  custom: {
    50: '#6d57a9',
    500: '#1f1784',
    950: '#000000',
  },
}

SCSS

$custom: #1f1784;
$custom-light: #6d57a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1784",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 132
  },
  "hsl": {
    "h": 244.404,
    "s": 70.323,
    "l": 30.392
  },
  "oklch": {
    "l": 0.31279,
    "c": 0.16941,
    "h": 273.7
  },
  "luminance": 0.0257
}

Semantic roles & 50–950 ramp

primary

#1F1784

secondary

#AFB83F

accent

#ED3BE0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1F1784

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

Preview Lab → · Contrast checker → · Palette generator →