#1F1783#1F1783

#1F1783 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.2% C 0.168 H 273.9°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#1F1783
RGB	rgb(31, 23, 131)
HSL	hsl(244, 70%, 30%)
HSV	hsv(244, 82%, 51%)
CMYK	cmyk(76.3%, 82.4%, 0%, 48.6%)
CIE-LAB	lab(18.11, 39.91, -58.01)
CIE-LCH	lch(18.11, 70.41, 304.53°)
OKLab	oklab(31.16% 0.0113 -0.1678)
OKLCH	oklch(31.16% 0.168 273.9)
XYZ	xyz(4.9668, 2.5423, 21.6973)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1783 #7B8317

analogous

#174583 #1F1783 #551783

triadic

#1F1783 #831F17 #17831F

tetradic

#1F1783 #831745 #7B8317 #178355

square

#1F1783 #831745 #7B8317 #178355

split-complementary

#1F1783 #835517 #458317

monochromatic

#06051B #130E4F #1F1783 #2B20B7 #4438DC

Accessibility & contrast

On white

13.92

#1F1783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1F1783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1783

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1783	#FFFFFF	#000000	##FFFFFF
##1F1783	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003186

Deuteranopia (green-blind)

#002781

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f1783;
/* rgb */ color: rgb(31, 23, 131);
/* oklch */ color: oklch(31.2% 0.168 273.9);

Tailwind

colors: {
  custom: {
    50: '#6d57a8',
    500: '#1f1783',
    950: '#000000',
  },
}

SCSS

$custom: #1f1783;
$custom-light: #6d57a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1783",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 131
  },
  "hsl": {
    "h": 244.444,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.31159,
    "c": 0.16818,
    "h": 273.9
  },
  "luminance": 0.02543
}

Semantic roles & 50–950 ramp

primary

#1F1783

secondary

#AEB73F

accent

#ED3BE0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1F1783

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

Preview Lab → · Contrast checker → · Palette generator →