#1F2989#1F2989

#1F2989 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.157 H 270.6°. Best body text is #FFFFFF at 12.09:1 contrast (WCAG AA passes).

Color values

HEX	#1F2989
RGB	rgb(31, 41, 137)
HSL	hsl(234, 63%, 33%)
HSV	hsv(234, 77%, 54%)
CMYK	cmyk(77.4%, 70.1%, 0%, 46.3%)
CIE-LAB	lab(22.59, 31.31, -54.38)
CIE-LCH	lch(22.59, 62.75, 299.93°)
OKLab	oklab(34.54% 0.0016 -0.1574)
OKLCH	oklch(34.54% 0.157 270.6)
XYZ	xyz(5.8718, 3.6827, 24.0634)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2989 #897F1F

analogous

#1F5E89 #1F2989 #4A1F89

triadic

#1F2989 #891F29 #29891F

tetradic

#1F2989 #891F5E #897F1F #1F894A

square

#1F2989 #891F5E #897F1F #1F894A

split-complementary

#1F2989 #894A1F #5E891F

monochromatic

#080B25 #141A57 #1F2989 #2A38BB #4C59D6

Accessibility & contrast

On white

12.09

#1F2989 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1F2989 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2989

12.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2989	#FFFFFF	#000000	##FFFFFF
##1F2989	1.00	12.09	1.74	12.09
#FFFFFF	12.09	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8C

Deuteranopia (green-blind)

#003187

Tritanopia (blue-blind)

#004355

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2989;
/* rgb */ color: rgb(31, 41, 137);
/* oklch */ color: oklch(34.5% 0.157 270.6);

Tailwind

colors: {
  custom: {
    50: '#6d63ac',
    500: '#1f2989',
    950: '#000000',
  },
}

SCSS

$custom: #1f2989;
$custom-light: #6d63ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2989",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 137
  },
  "hsl": {
    "h": 234.34,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.34545,
    "c": 0.15737,
    "h": 270.6
  },
  "luminance": 0.03683
}

Semantic roles & 50–950 ramp

primary

#1F2989

secondary

#B9AF4B

accent

#D742E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2989

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

Preview Lab → · Contrast checker → · Palette generator →