#1F168A#1F168A

#1F168A is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.178 H 273.2°. Best body text is #FFFFFF at 13.64:1 contrast (WCAG AA passes).

Color values

HEX	#1F168A
RGB	rgb(31, 22, 138)
HSL	hsl(245, 73%, 31%)
HSV	hsv(245, 84%, 54%)
CMYK	cmyk(77.5%, 84.1%, 0%, 45.9%)
CIE-LAB	lab(18.80, 42.67, -61.28)
CIE-LCH	lch(18.80, 74.67, 304.85°)
OKLab	oklab(31.89% 0.0098 -0.1772)
OKLCH	oklch(31.89% 0.178 273.2)
XYZ	xyz(5.4379, 2.6995, 24.2743)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F168A #818A16

analogous

#16478A #1F168A #59168A

triadic

#1F168A #8A1F16 #168A1F

tetradic

#1F168A #8A1647 #818A16 #168A59

square

#1F168A #8A1647 #818A16 #168A59

split-complementary

#1F168A #8A5916 #478A16

monochromatic

#070520 #130E55 #1F168A #2B1EBF #473BE0

Accessibility & contrast

On white

13.64

#1F168A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1F168A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F168A

13.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F168A	#FFFFFF	#000000	##FFFFFF
##1F168A	1.00	13.64	1.54	13.64
#FFFFFF	13.64	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338D

Deuteranopia (green-blind)

#002888

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f168a;
/* rgb */ color: rgb(31, 22, 138);
/* oklch */ color: oklch(31.9% 0.178 273.2);

Tailwind

colors: {
  custom: {
    50: '#6f57ad',
    500: '#1f168a',
    950: '#000000',
  },
}

SCSS

$custom: #1f168a;
$custom-light: #6f57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f168a",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 138
  },
  "hsl": {
    "h": 244.655,
    "s": 72.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31887,
    "c": 0.17752,
    "h": 273.2
  },
  "luminance": 0.027
}

Semantic roles & 50–950 ramp

primary

#1F168A

secondary

#B4BE3E

accent

#EF39E1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1F168A

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

Preview Lab → · Contrast checker → · Palette generator →