#1F2772#1F2772

#1F2772 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 31.9% C 0.128 H 272.2°. Best body text is #FFFFFF at 13.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F2772
RGB	rgb(31, 39, 114)
HSL	hsl(234, 57%, 28%)
HSV	hsv(234, 73%, 45%)
CMYK	cmyk(72.8%, 65.8%, 0%, 55.3%)
CIE-LAB	lab(19.87, 23.92, -44.26)
CIE-LCH	lch(19.87, 50.31, 298.39°)
OKLab	oklab(31.88% 0.0048 -0.1278)
OKLCH	oklch(31.88% 0.128 272.2)
XYZ	xyz(4.3268, 2.9568, 16.2590)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2772 #726A1F

analogous

#1F5072 #1F2772 #401F72

triadic

#1F2772 #721F27 #27721F

tetradic

#1F2772 #721F50 #726A1F #1F7240

square

#1F2772 #721F50 #726A1F #1F7240

split-complementary

#1F2772 #72401F #50721F

monochromatic

#070818 #121742 #1F2772 #2C37A2 #404ECB

Accessibility & contrast

On white

13.20

#1F2772 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F2772 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2772

13.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2772	#FFFFFF	#000000	##FFFFFF
##1F2772	1.00	13.20	1.59	13.20
#FFFFFF	13.20	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003474

Deuteranopia (green-blind)

#002C71

Tritanopia (blue-blind)

#003A48

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f2772;
/* rgb */ color: rgb(31, 39, 114);
/* oklch */ color: oklch(31.9% 0.128 272.2);

Tailwind

colors: {
  custom: {
    50: '#67619b',
    500: '#1f2772',
    950: '#000000',
  },
}

SCSS

$custom: #1f2772;
$custom-light: #67619b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2772",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 114
  },
  "hsl": {
    "h": 234.217,
    "s": 57.241,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31879,
    "c": 0.12785,
    "h": 272.2
  },
  "luminance": 0.02957
}

Semantic roles & 50–950 ramp

primary

#1F2772

secondary

#A69D47

accent

#D247E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2772

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

Preview Lab → · Contrast checker → · Palette generator →