#1F2688#1F2688

#1F2688 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.9% C 0.159 H 271.2°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F2688
RGB	rgb(31, 38, 136)
HSL	hsl(236, 63%, 33%)
HSV	hsv(236, 77%, 53%)
CMYK	cmyk(77.2%, 72.1%, 0%, 46.7%)
CIE-LAB	lab(21.78, 32.88, -55.09)
CIE-LCH	lch(21.78, 64.16, 300.83°)
OKLab	oklab(33.93% 0.0034 -0.1594)
OKLCH	oklch(33.93% 0.159 271.2)
XYZ	xyz(5.7006, 3.4545, 23.6541)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2688 #88811F

analogous

#1F5A88 #1F2688 #4C1F88

triadic

#1F2688 #881F26 #26881F

tetradic

#1F2688 #881F5A #88811F #1F884C

square

#1F2688 #881F5A #88811F #1F884C

split-complementary

#1F2688 #884C1F #5A881F

monochromatic

#080A24 #141856 #1F2688 #2A34BA #4B55D6

Accessibility & contrast

On white

12.42

#1F2688 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2688 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2688

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2688	#FFFFFF	#000000	##FFFFFF
##1F2688	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398B

Deuteranopia (green-blind)

#002F86

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2688;
/* rgb */ color: rgb(31, 38, 136);
/* oklch */ color: oklch(33.9% 0.159 271.2);

Tailwind

colors: {
  custom: {
    50: '#6d61ac',
    500: '#1f2688',
    950: '#000000',
  },
}

SCSS

$custom: #1f2688;
$custom-light: #6d61ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2688",
  "rgb": {
    "r": 31,
    "g": 38,
    "b": 136
  },
  "hsl": {
    "h": 236,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33926,
    "c": 0.15949,
    "h": 271.2
  },
  "luminance": 0.03455
}

Semantic roles & 50–950 ramp

primary

#1F2688

secondary

#B9B14A

accent

#DB42E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2688

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

Preview Lab → · Contrast checker → · Palette generator →