#1F2372#1F2372

#1F2372 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.1% C 0.133 H 273.4°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#1F2372
RGB	rgb(31, 35, 114)
HSL	hsl(237, 57%, 28%)
HSV	hsv(237, 73%, 45%)
CMYK	cmyk(72.8%, 69.3%, 0%, 55.3%)
CIE-LAB	lab(18.83, 26.66, -45.96)
CIE-LCH	lch(18.83, 53.13, 300.12°)
OKLab	oklab(31.12% 0.0079 -0.1328)
OKLCH	oklch(31.12% 0.133 273.4)
XYZ	xyz(4.2024, 2.7079, 16.2175)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2372 #726E1F

analogous

#1F4C72 #1F2372 #441F72

triadic

#1F2372 #721F23 #23721F

tetradic

#1F2372 #721F4C #726E1F #1F7244

square

#1F2372 #721F4C #726E1F #1F7244

split-complementary

#1F2372 #72441F #4C721F

monochromatic

#070718 #121442 #1F2372 #2C32A2 #4047CB

Accessibility & contrast

On white

13.62

#1F2372 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1F2372 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2372

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2372	#FFFFFF	#000000	##FFFFFF
##1F2372	1.00	13.62	1.54	13.62
#FFFFFF	13.62	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003274

Deuteranopia (green-blind)

#002A71

Tritanopia (blue-blind)

#003847

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f2372;
/* rgb */ color: rgb(31, 35, 114);
/* oklch */ color: oklch(31.1% 0.133 273.4);

Tailwind

colors: {
  custom: {
    50: '#685e9b',
    500: '#1f2372',
    950: '#000000',
  },
}

SCSS

$custom: #1f2372;
$custom-light: #685e9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2372",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 114
  },
  "hsl": {
    "h": 237.108,
    "s": 57.241,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31121,
    "c": 0.133,
    "h": 273.4
  },
  "luminance": 0.02708
}

Semantic roles & 50–950 ramp

primary

#1F2372

secondary

#A6A147

accent

#D947E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F2372

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

Preview Lab → · Contrast checker → · Palette generator →