#1F199E#1F199E

#1F199E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.7% C 0.199 H 271.1°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F199E
RGB	rgb(31, 25, 158)
HSL	hsl(243, 73%, 36%)
HSV	hsv(243, 84%, 62%)
CMYK	cmyk(80.4%, 84.2%, 0%, 38%)
CIE-LAB	lab(21.78, 47.56, -68.71)
CIE-LCH	lch(21.78, 83.56, 304.69°)
OKLab	oklab(34.67% 0.0039 -0.1988)
OKLCH	oklch(34.67% 0.199 271.1)
XYZ	xyz(7.0822, 3.4544, 32.6346)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F199E #989E19

analogous

#19559E #1F199E #61199E

triadic

#1F199E #9E1F19 #199E1F

tetradic

#1F199E #9E1955 #989E19 #199E61

square

#1F199E #9E1955 #989E19 #199E61

split-complementary

#1F199E #9E6119 #559E19

monochromatic

#0A0834 #151169 #1F199E #2921D3 #554EE3

Accessibility & contrast

On white

12.42

#1F199E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F199E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F199E

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F199E	#FFFFFF	#000000	##FFFFFF
##1F199E	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA2

Deuteranopia (green-blind)

#002D9C

Tritanopia (blue-blind)

#00445E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f199e;
/* rgb */ color: rgb(31, 25, 158);
/* oklch */ color: oklch(34.7% 0.199 271.1);

Tailwind

colors: {
  custom: {
    50: '#745abc',
    500: '#1f199e',
    950: '#000000',
  },
}

SCSS

$custom: #1f199e;
$custom-light: #745abc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f199e",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 158
  },
  "hsl": {
    "h": 242.707,
    "s": 72.678,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34665,
    "c": 0.19887,
    "h": 271.1
  },
  "luminance": 0.03455
}

Semantic roles & 50–950 ramp

primary

#1F199E

secondary

#C0C54E

accent

#EF38E7

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F199E

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

Preview Lab → · Contrast checker → · Palette generator →