#1F2B72#1F2B72

#1F2B72 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.123 H 270.7°. Best body text is #FFFFFF at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B72
RGB	rgb(31, 43, 114)
HSL	hsl(231, 57%, 28%)
HSV	hsv(231, 73%, 45%)
CMYK	cmyk(72.8%, 62.3%, 0%, 55.3%)
CIE-LAB	lab(20.96, 21.12, -42.49)
CIE-LCH	lch(20.96, 47.45, 296.43°)
OKLab	oklab(32.68% 0.0015 -0.1225)
OKLCH	oklch(32.68% 0.123 270.7)
XYZ	xyz(4.4652, 3.2335, 16.3051)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B72 #72661F

analogous

#1F5472 #1F2B72 #3C1F72

triadic

#1F2B72 #721F2B #2B721F

tetradic

#1F2B72 #721F54 #72661F #1F723C

square

#1F2B72 #721F54 #72661F #1F723C

split-complementary

#1F2B72 #723C1F #54721F

monochromatic

#070918 #121942 #1F2B72 #2C3DA2 #4054CB

Accessibility & contrast

On white

12.75

#1F2B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F2B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B72

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B72	#FFFFFF	#000000	##FFFFFF
##1F2B72	1.00	12.75	1.65	12.75
#FFFFFF	12.75	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003674

Deuteranopia (green-blind)

#002F71

Tritanopia (blue-blind)

#003D4A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2b72;
/* rgb */ color: rgb(31, 43, 114);
/* oklch */ color: oklch(32.7% 0.123 270.7);

Tailwind

colors: {
  custom: {
    50: '#67649b',
    500: '#1f2b72',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b72;
$custom-light: #67649b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b72",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 114
  },
  "hsl": {
    "h": 231.325,
    "s": 57.241,
    "l": 28.431
  },
  "oklch": {
    "l": 0.32681,
    "c": 0.12253,
    "h": 270.7
  },
  "luminance": 0.03234
}

Semantic roles & 50–950 ramp

primary

#1F2B72

secondary

#A69847

accent

#CA47E0

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2B72

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

Preview Lab → · Contrast checker → · Palette generator →