#1F2589#1F2589

#1F2589 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.162 H 271.3°. Best body text is #FFFFFF at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#1F2589
RGB	rgb(31, 37, 137)
HSL	hsl(237, 63%, 33%)
HSV	hsv(237, 77%, 54%)
CMYK	cmyk(77.4%, 73%, 0%, 46.3%)
CIE-LAB	lab(21.65, 33.88, -55.93)
CIE-LCH	lch(21.65, 65.39, 301.20°)
OKLab	oklab(33.87% 0.0038 -0.1619)
OKLCH	oklch(33.87% 0.162 271.3)
XYZ	xyz(5.7405, 3.4200, 24.0196)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2589 #89831F

analogous

#1F5A89 #1F2589 #4E1F89

triadic

#1F2589 #891F25 #25891F

tetradic

#1F2589 #891F5A #89831F #1F894E

square

#1F2589 #891F5A #89831F #1F894E

split-complementary

#1F2589 #894E1F #5A891F

monochromatic

#080A25 #141857 #1F2589 #2A32BB #4C54D6

Accessibility & contrast

On white

12.47

#1F2589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F2589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2589

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2589	#FFFFFF	#000000	##FFFFFF
##1F2589	1.00	12.47	1.68	12.47
#FFFFFF	12.47	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398C

Deuteranopia (green-blind)

#002F87

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2589;
/* rgb */ color: rgb(31, 37, 137);
/* oklch */ color: oklch(33.9% 0.162 271.3);

Tailwind

colors: {
  custom: {
    50: '#6d60ac',
    500: '#1f2589',
    950: '#000000',
  },
}

SCSS

$custom: #1f2589;
$custom-light: #6d60ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2589",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 137
  },
  "hsl": {
    "h": 236.604,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33867,
    "c": 0.16192,
    "h": 271.3
  },
  "luminance": 0.03421
}

Semantic roles & 50–950 ramp

primary

#1F2589

secondary

#B9B34B

accent

#DD42E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2589

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

Preview Lab → · Contrast checker → · Palette generator →