#1F1899#1F1899

#1F1899 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.9% C 0.194 H 271.6°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F1899
RGB	rgb(31, 24, 153)
HSL	hsl(243, 73%, 35%)
HSV	hsv(243, 84%, 60%)
CMYK	cmyk(79.7%, 84.3%, 0%, 40%)
CIE-LAB	lab(20.99, 46.46, -66.94)
CIE-LCH	lch(20.99, 81.49, 304.76°)
OKLab	oklab(33.94% 0.0054 -0.1937)
OKLCH	oklch(33.94% 0.194 271.6)
XYZ	xyz(6.6395, 3.2437, 30.4070)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1899 #929918

analogous

#185199 #1F1899 #601899

triadic

#1F1899 #991F18 #18991F

tetradic

#1F1899 #991851 #929918 #189960

square

#1F1899 #991851 #929918 #189960

split-complementary

#1F1899 #996018 #519918

monochromatic

#0A072F #141064 #1F1899 #2A20CE #5149E2

Accessibility & contrast

On white

12.74

#1F1899 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F1899 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1899

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1899	#FFFFFF	#000000	##FFFFFF
##1F1899	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00399C

Deuteranopia (green-blind)

#002C97

Tritanopia (blue-blind)

#00425A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f1899;
/* rgb */ color: rgb(31, 24, 153);
/* oklch */ color: oklch(33.9% 0.194 271.6);

Tailwind

colors: {
  custom: {
    50: '#7359b8',
    500: '#1f1899',
    950: '#000000',
  },
}

SCSS

$custom: #1f1899;
$custom-light: #7359b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1899",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 153
  },
  "hsl": {
    "h": 243.256,
    "s": 72.881,
    "l": 34.706
  },
  "oklch": {
    "l": 0.33944,
    "c": 0.19377,
    "h": 271.6
  },
  "luminance": 0.03244
}

Semantic roles & 50–950 ramp

primary

#1F1899

secondary

#BDC449

accent

#F038E6

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F1899

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

Preview Lab → · Contrast checker → · Palette generator →