#1F2B7E#1F2B7E

#1F2B7E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.8% C 0.140 H 270.5°. Best body text is #FFFFFF at 12.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B7E
RGB	rgb(31, 43, 126)
HSL	hsl(232, 61%, 31%)
HSV	hsv(232, 75%, 49%)
CMYK	cmyk(75.4%, 65.9%, 0%, 50.6%)
CIE-LAB	lab(22.03, 25.79, -48.38)
CIE-LCH	lch(22.03, 54.83, 298.06°)
OKLab	oklab(33.81% 0.0012 -0.1398)
OKLCH	oklch(33.81% 0.14 270.5)
XYZ	xyz(5.1936, 3.5249, 20.1413)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B7E #7E721F

analogous

#1F5A7E #1F2B7E #421F7E

triadic

#1F2B7E #7E1F2B #2B7E1F

tetradic

#1F2B7E #7E1F5A #7E721F #1F7E42

square

#1F2B7E #7E1F5A #7E721F #1F7E42

split-complementary

#1F2B7E #7E421F #5A7E1F

monochromatic

#07091C #131A4D #1F2B7E #2B3CAF #4658D1

Accessibility & contrast

On white

12.32

#1F2B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F2B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B7E

12.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B7E	#FFFFFF	#000000	##FFFFFF
##1F2B7E	1.00	12.32	1.70	12.32
#FFFFFF	12.32	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003981

Deuteranopia (green-blind)

#00307C

Tritanopia (blue-blind)

#004150

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2b7e;
/* rgb */ color: rgb(31, 43, 126);
/* oklch */ color: oklch(33.8% 0.140 270.5);

Tailwind

colors: {
  custom: {
    50: '#6a64a4',
    500: '#1f2b7e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b7e;
$custom-light: #6a64a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b7e",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 126
  },
  "hsl": {
    "h": 232.421,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33812,
    "c": 0.13981,
    "h": 270.5
  },
  "luminance": 0.03525
}

Semantic roles & 50–950 ramp

primary

#1F2B7E

secondary

#B1A448

accent

#CF44E4

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1F2B7E

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

Preview Lab → · Contrast checker → · Palette generator →