#1F2783#1F2783

#1F2783 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.6% C 0.152 H 271.3°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#1F2783
RGB	rgb(31, 39, 131)
HSL	hsl(235, 62%, 32%)
HSV	hsv(235, 76%, 51%)
CMYK	cmyk(76.3%, 70.2%, 0%, 48.6%)
CIE-LAB	lab(21.51, 30.38, -52.40)
CIE-LCH	lch(21.51, 60.57, 300.10°)
OKLab	oklab(33.58% 0.0034 -0.1516)
OKLCH	oklch(33.58% 0.152 271.3)
XYZ	xyz(5.3859, 3.3805, 21.8370)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2783 #837B1F

analogous

#1F5983 #1F2783 #491F83

triadic

#1F2783 #831F27 #27831F

tetradic

#1F2783 #831F59 #837B1F #1F8349

square

#1F2783 #831F59 #837B1F #1F8349

split-complementary

#1F2783 #83491F #59831F

monochromatic

#080A20 #131852 #1F2783 #2B36B4 #4954D4

Accessibility & contrast

On white

12.53

#1F2783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F2783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2783

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2783	#FFFFFF	#000000	##FFFFFF
##1F2783	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003886

Deuteranopia (green-blind)

#002F81

Tritanopia (blue-blind)

#004051

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2783;
/* rgb */ color: rgb(31, 39, 131);
/* oklch */ color: oklch(33.6% 0.152 271.3);

Tailwind

colors: {
  custom: {
    50: '#6c61a8',
    500: '#1f2783',
    950: '#000000',
  },
}

SCSS

$custom: #1f2783;
$custom-light: #6c61a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2783",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 131
  },
  "hsl": {
    "h": 235.2,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.33575,
    "c": 0.15163,
    "h": 271.3
  },
  "luminance": 0.03381
}

Semantic roles & 50–950 ramp

primary

#1F2783

secondary

#B6AD48

accent

#D843E5

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2783

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

Preview Lab → · Contrast checker → · Palette generator →