#1F2273#1F2273

#1F2273 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.0% C 0.136 H 273.6°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F2273
RGB	rgb(31, 34, 115)
HSL	hsl(238, 58%, 29%)
HSV	hsv(238, 73%, 45%)
CMYK	cmyk(73%, 70.4%, 0%, 54.9%)
CIE-LAB	lab(18.68, 27.70, -46.85)
CIE-LCH	lch(18.68, 54.43, 300.60°)
OKLab	oklab(31.04% 0.0085 -0.1354)
OKLCH	oklch(31.04% 0.136 273.6)
XYZ	xyz(4.2306, 2.6728, 16.5093)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2273 #73701F

analogous

#1F4C73 #1F2273 #461F73

triadic

#1F2273 #731F22 #22731F

tetradic

#1F2273 #731F4C #73701F #1F7346

square

#1F2273 #731F4C #73701F #1F7346

split-complementary

#1F2273 #73461F #4C731F

monochromatic

#060718 #121443 #1F2273 #2C30A3 #4146CC

Accessibility & contrast

On white

13.68

#1F2273 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F2273 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2273

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2273	#FFFFFF	#000000	##FFFFFF
##1F2273	1.00	13.68	1.53	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003176

Deuteranopia (green-blind)

#002A71

Tritanopia (blue-blind)

#003847

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f2273;
/* rgb */ color: rgb(31, 34, 115);
/* oklch */ color: oklch(31.0% 0.136 273.6);

Tailwind

colors: {
  custom: {
    50: '#685d9c',
    500: '#1f2273',
    950: '#000000',
  },
}

SCSS

$custom: #1f2273;
$custom-light: #685d9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2273",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 115
  },
  "hsl": {
    "h": 237.857,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.31041,
    "c": 0.13565,
    "h": 273.6
  },
  "luminance": 0.02673
}

Semantic roles & 50–950 ramp

primary

#1F2273

secondary

#A7A347

accent

#DB47E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F2273

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

Preview Lab → · Contrast checker → · Palette generator →