#1F2A73#1F2A73

#1F2A73 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.6% C 0.125 H 271.1°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A73
RGB	rgb(31, 42, 115)
HSL	hsl(232, 58%, 29%)
HSV	hsv(232, 73%, 45%)
CMYK	cmyk(73%, 63.5%, 0%, 54.9%)
CIE-LAB	lab(20.77, 22.22, -43.44)
CIE-LCH	lch(20.77, 48.79, 297.09°)
OKLab	oklab(32.57% 0.0023 -0.1253)
OKLCH	oklch(32.57% 0.125 271.1)
XYZ	xyz(4.4865, 3.1846, 16.5946)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A73 #73681F

analogous

#1F5473 #1F2A73 #3E1F73

triadic

#1F2A73 #731F2A #2A731F

tetradic

#1F2A73 #731F54 #73681F #1F733E

square

#1F2A73 #731F54 #73681F #1F733E

split-complementary

#1F2A73 #733E1F #54731F

monochromatic

#060918 #121843 #1F2A73 #2C3CA3 #4153CC

Accessibility & contrast

On white

12.83

#1F2A73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1F2A73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A73

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A73	#FFFFFF	#000000	##FFFFFF
##1F2A73	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003675

Deuteranopia (green-blind)

#002E72

Tritanopia (blue-blind)

#003C4A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2a73;
/* rgb */ color: rgb(31, 42, 115);
/* oklch */ color: oklch(32.6% 0.125 271.1);

Tailwind

colors: {
  custom: {
    50: '#67639c',
    500: '#1f2a73',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a73;
$custom-light: #67639c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a73",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 115
  },
  "hsl": {
    "h": 232.143,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.3257,
    "c": 0.12534,
    "h": 271.1
  },
  "luminance": 0.03185
}

Semantic roles & 50–950 ramp

primary

#1F2A73

secondary

#A79A47

accent

#CD47E1

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2A73

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

Preview Lab → · Contrast checker → · Palette generator →