#1F2883#1F2883

#1F2883 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.8% C 0.150 H 271.1°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F2883
RGB	rgb(31, 40, 131)
HSL	hsl(235, 62%, 32%)
HSV	hsv(235, 76%, 51%)
CMYK	cmyk(76.3%, 69.5%, 0%, 48.6%)
CIE-LAB	lab(21.75, 29.72, -52.00)
CIE-LCH	lch(21.75, 59.89, 299.75°)
OKLab	oklab(33.75% 0.0028 -0.1504)
OKLCH	oklch(33.75% 0.15 271.1)
XYZ	xyz(5.4192, 3.4470, 21.8481)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2883 #837A1F

analogous

#1F5A83 #1F2883 #481F83

triadic

#1F2883 #831F28 #28831F

tetradic

#1F2883 #831F5A #837A1F #1F8348

square

#1F2883 #831F5A #837A1F #1F8348

split-complementary

#1F2883 #83481F #5A831F

monochromatic

#080A20 #131952 #1F2883 #2B37B4 #4955D4

Accessibility & contrast

On white

12.43

#1F2883 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2883 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2883

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2883	#FFFFFF	#000000	##FFFFFF
##1F2883	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003986

Deuteranopia (green-blind)

#002F81

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2883;
/* rgb */ color: rgb(31, 40, 131);
/* oklch */ color: oklch(33.8% 0.150 271.1);

Tailwind

colors: {
  custom: {
    50: '#6c62a8',
    500: '#1f2883',
    950: '#000000',
  },
}

SCSS

$custom: #1f2883;
$custom-light: #6c62a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2883",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 131
  },
  "hsl": {
    "h": 234.6,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.33753,
    "c": 0.15044,
    "h": 271.1
  },
  "luminance": 0.03448
}

Semantic roles & 50–950 ramp

primary

#1F2883

secondary

#B6AC48

accent

#D643E5

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2883

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

Preview Lab → · Contrast checker → · Palette generator →