#1F168B#1F168B

#1F168B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.179 H 273.1°. Best body text is #FFFFFF at 13.59:1 contrast (WCAG AA passes).

Color values

HEX	#1F168B
RGB	rgb(31, 22, 139)
HSL	hsl(245, 73%, 32%)
HSV	hsv(245, 84%, 55%)
CMYK	cmyk(77.7%, 84.2%, 0%, 45.5%)
CIE-LAB	lab(18.92, 42.99, -61.69)
CIE-LCH	lch(18.92, 75.20, 304.87°)
OKLab	oklab(32.01% 0.0095 -0.1785)
OKLCH	oklch(32.01% 0.179 273.1)
XYZ	xyz(5.5106, 2.7286, 24.6573)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F168B #828B16

analogous

#16488B #1F168B #5A168B

triadic

#1F168B #8B1F16 #168B1F

tetradic

#1F168B #8B1648 #828B16 #168B5A

square

#1F168B #8B1648 #828B16 #168B5A

split-complementary

#1F168B #8B5A16 #488B16

monochromatic

#070521 #130E56 #1F168B #2B1EC0 #483BE0

Accessibility & contrast

On white

13.59

#1F168B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1F168B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F168B

13.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F168B	#FFFFFF	#000000	##FFFFFF
##1F168B	1.00	13.59	1.55	13.59
#FFFFFF	13.59	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338E

Deuteranopia (green-blind)

#002889

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f168b;
/* rgb */ color: rgb(31, 22, 139);
/* oklch */ color: oklch(32.0% 0.179 273.1);

Tailwind

colors: {
  custom: {
    50: '#6f57ae',
    500: '#1f168b',
    950: '#000000',
  },
}

SCSS

$custom: #1f168b;
$custom-light: #6f57ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f168b",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 139
  },
  "hsl": {
    "h": 244.615,
    "s": 72.671,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32009,
    "c": 0.17871,
    "h": 273.1
  },
  "luminance": 0.02729
}

Semantic roles & 50–950 ramp

primary

#1F168B

secondary

#B5BF3E

accent

#EF38E1

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #1F168B

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

Preview Lab → · Contrast checker → · Palette generator →