#1F2B83#1F2B83

#1F2B83 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.3% C 0.147 H 270.3°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B83
RGB	rgb(31, 43, 131)
HSL	hsl(233, 62%, 32%)
HSV	hsv(233, 76%, 51%)
CMYK	cmyk(76.3%, 67.2%, 0%, 48.6%)
CIE-LAB	lab(22.50, 27.71, -50.76)
CIE-LCH	lch(22.50, 57.84, 298.63°)
OKLab	oklab(34.3% 0.0009 -0.1468)
OKLCH	oklch(34.3% 0.147 270.3)
XYZ	xyz(5.5243, 3.6572, 21.8831)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B83 #83771F

analogous

#1F5D83 #1F2B83 #451F83

triadic

#1F2B83 #831F2B #2B831F

tetradic

#1F2B83 #831F5D #83771F #1F8345

square

#1F2B83 #831F5D #83771F #1F8345

split-complementary

#1F2B83 #83451F #5D831F

monochromatic

#080B20 #131B52 #1F2B83 #2B3BB4 #4959D4

Accessibility & contrast

On white

12.13

#1F2B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F2B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B83

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B83	#FFFFFF	#000000	##FFFFFF
##1F2B83	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B86

Deuteranopia (green-blind)

#003181

Tritanopia (blue-blind)

#004253

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2b83;
/* rgb */ color: rgb(31, 43, 131);
/* oklch */ color: oklch(34.3% 0.147 270.3);

Tailwind

colors: {
  custom: {
    50: '#6b64a8',
    500: '#1f2b83',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b83;
$custom-light: #6b64a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b83",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 131
  },
  "hsl": {
    "h": 232.8,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.34301,
    "c": 0.14679,
    "h": 270.3
  },
  "luminance": 0.03658
}

Semantic roles & 50–950 ramp

primary

#1F2B83

secondary

#B6A948

accent

#D143E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080510

muted

#7A7A7F

Preview Lab

Preview with #1F2B83

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

Preview Lab → · Contrast checker → · Palette generator →