#1F2A7D#1F2A7D

#1F2A7D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.5% C 0.140 H 270.8°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A7D
RGB	rgb(31, 42, 125)
HSL	hsl(233, 60%, 31%)
HSV	hsv(233, 75%, 49%)
CMYK	cmyk(75.2%, 66.4%, 0%, 51%)
CIE-LAB	lab(21.68, 26.09, -48.33)
CIE-LCH	lch(21.68, 54.92, 298.37°)
OKLab	oklab(33.52% 0.002 -0.1396)
OKLCH	oklch(33.52% 0.14 270.8)
XYZ	xyz(5.0934, 3.4274, 19.7912)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A7D #7D721F

analogous

#1F597D #1F2A7D #431F7D

triadic

#1F2A7D #7D1F2A #2A7D1F

tetradic

#1F2A7D #7D1F59 #7D721F #1F7D43

square

#1F2A7D #7D1F59 #7D721F #1F7D43

split-complementary

#1F2A7D #7D431F #597D1F

monochromatic

#07091B #131A4C #1F2A7D #2B3AAE #4556D1

Accessibility & contrast

On white

12.46

#1F2A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A7D

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A7D	#FFFFFF	#000000	##FFFFFF
##1F2A7D	1.00	12.46	1.69	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003880

Deuteranopia (green-blind)

#00307B

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2a7d;
/* rgb */ color: rgb(31, 42, 125);
/* oklch */ color: oklch(33.5% 0.140 270.8);

Tailwind

colors: {
  custom: {
    50: '#6a63a3',
    500: '#1f2a7d',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a7d;
$custom-light: #6a63a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a7d",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 125
  },
  "hsl": {
    "h": 232.979,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33524,
    "c": 0.13966,
    "h": 270.8
  },
  "luminance": 0.03428
}

Semantic roles & 50–950 ramp

primary

#1F2A7D

secondary

#B0A448

accent

#D144E3

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F2A7D

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

Preview Lab → · Contrast checker → · Palette generator →