#1F118E#1F118E

#1F118E is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.9% C 0.186 H 273.1°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F118E
RGB	rgb(31, 17, 142)
HSL	hsl(247, 79%, 31%)
HSV	hsv(247, 88%, 56%)
CMYK	cmyk(78.2%, 88%, 0%, 44.3%)
CIE-LAB	lab(18.56, 46.13, -64.17)
CIE-LCH	lch(18.56, 79.03, 305.71°)
OKLab	oklab(31.87% 0.01 -0.1855)
OKLCH	oklch(31.87% 0.186 273.1)
XYZ	xyz(5.6464, 2.6446, 25.7988)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F118E #808E11

analogous

#11418E #1F118E #5D118E

triadic

#1F118E #8E1F11 #118E1F

tetradic

#1F118E #8E1141 #808E11 #118E5D

square

#1F118E #8E1141 #808E11 #118E5D

split-complementary

#1F118E #8E5D11 #418E11

monochromatic

#070421 #130A57 #1F118E #2B18C5 #4733E7

Accessibility & contrast

On white

13.73

#1F118E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F118E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F118E

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F118E	#FFFFFF	#000000	##FFFFFF
##1F118E	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003391

Deuteranopia (green-blind)

#00278C

Tritanopia (blue-blind)

#003B53

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f118e;
/* rgb */ color: rgb(31, 17, 142);
/* oklch */ color: oklch(31.9% 0.186 273.1);

Tailwind

colors: {
  custom: {
    50: '#7155b0',
    500: '#1f118e',
    950: '#000000',
  },
}

SCSS

$custom: #1f118e;
$custom-light: #7155b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f118e",
  "rgb": {
    "r": 31,
    "g": 17,
    "b": 142
  },
  "hsl": {
    "h": 246.72,
    "s": 78.616,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31869,
    "c": 0.18581,
    "h": 273.1
  },
  "luminance": 0.02645
}

Semantic roles & 50–950 ramp

primary

#1F118E

secondary

#B3C238

accent

#F533DF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F118E

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

Preview Lab → · Contrast checker → · Palette generator →