#1F2A71#1F2A71

#1F2A71 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.4% C 0.122 H 271.1°. Best body text is #FFFFFF at 12.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A71
RGB	rgb(31, 42, 113)
HSL	hsl(232, 57%, 28%)
HSV	hsv(232, 73%, 44%)
CMYK	cmyk(72.6%, 62.8%, 0%, 55.7%)
CIE-LAB	lab(20.59, 21.43, -42.44)
CIE-LCH	lch(20.59, 47.54, 296.80°)
OKLab	oklab(32.38% 0.0024 -0.1224)
OKLCH	oklch(32.38% 0.122 271.1)
XYZ	xyz(4.3727, 3.1391, 15.9950)
Luminance	0.0314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A71 #71661F

analogous

#1F5371 #1F2A71 #3D1F71

triadic

#1F2A71 #711F2A #2A711F

tetradic

#1F2A71 #711F53 #71661F #1F713D

square

#1F2A71 #711F53 #71661F #1F713D

split-complementary

#1F2A71 #713D1F #53711F

monochromatic

#070918 #121841 #1F2A71 #2C3CA1 #4052CB

Accessibility & contrast

On white

12.90

#1F2A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1F2A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A71

12.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A71	#FFFFFF	#000000	##FFFFFF
##1F2A71	1.00	12.90	1.63	12.90
#FFFFFF	12.90	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003573

Deuteranopia (green-blind)

#002E70

Tritanopia (blue-blind)

#003C49

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2a71;
/* rgb */ color: rgb(31, 42, 113);
/* oklch */ color: oklch(32.4% 0.122 271.1);

Tailwind

colors: {
  custom: {
    50: '#67639a',
    500: '#1f2a71',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a71;
$custom-light: #67639a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a71",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 113
  },
  "hsl": {
    "h": 231.951,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32384,
    "c": 0.1224,
    "h": 271.1
  },
  "luminance": 0.03139
}

Semantic roles & 50–950 ramp

primary

#1F2A71

secondary

#A59847

accent

#CC48E0

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2A71

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

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