#1F2584#1F2584

#1F2584 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.3% C 0.155 H 271.7°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F2584
RGB	rgb(31, 37, 132)
HSL	hsl(236, 62%, 32%)
HSV	hsv(236, 77%, 52%)
CMYK	cmyk(76.5%, 72%, 0%, 48.2%)
CIE-LAB	lab(21.13, 32.05, -53.65)
CIE-LCH	lch(21.13, 62.49, 300.85°)
OKLab	oklab(33.34% 0.0045 -0.1552)
OKLCH	oklch(33.34% 0.155 271.7)
XYZ	xyz(5.3901, 3.2798, 22.1743)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2584 #847E1F

analogous

#1F5784 #1F2584 #4C1F84

triadic

#1F2584 #841F25 #25841F

tetradic

#1F2584 #841F57 #847E1F #1F844C

square

#1F2584 #841F57 #847E1F #1F844C

split-complementary

#1F2584 #844C1F #57841F

monochromatic

#080921 #131752 #1F2584 #2B33B6 #4951D4

Accessibility & contrast

On white

12.68

#1F2584 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F2584 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2584

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2584	#FFFFFF	#000000	##FFFFFF
##1F2584	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003887

Deuteranopia (green-blind)

#002E82

Tritanopia (blue-blind)

#003F51

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2584;
/* rgb */ color: rgb(31, 37, 132);
/* oklch */ color: oklch(33.3% 0.155 271.7);

Tailwind

colors: {
  custom: {
    50: '#6c60a9',
    500: '#1f2584',
    950: '#000000',
  },
}

SCSS

$custom: #1f2584;
$custom-light: #6c60a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2584",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 132
  },
  "hsl": {
    "h": 236.436,
    "s": 61.963,
    "l": 31.961
  },
  "oklch": {
    "l": 0.33335,
    "c": 0.15529,
    "h": 271.7
  },
  "luminance": 0.0328
}

Semantic roles & 50–950 ramp

primary

#1F2584

secondary

#B7B048

accent

#DB43E5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2584

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

Preview Lab → · Contrast checker → · Palette generator →