#1F2388#1F2388

#1F2388 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.4% C 0.163 H 271.8°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F2388
RGB	rgb(31, 35, 136)
HSL	hsl(238, 63%, 33%)
HSV	hsv(238, 77%, 53%)
CMYK	cmyk(77.2%, 74.3%, 0%, 46.7%)
CIE-LAB	lab(21.10, 34.76, -56.22)
CIE-LCH	lch(21.10, 66.10, 301.73°)
OKLab	oklab(33.43% 0.005 -0.1627)
OKLCH	oklch(33.43% 0.163 271.8)
XYZ	xyz(5.6085, 3.2703, 23.6234)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2388 #88841F

analogous

#1F5888 #1F2388 #4F1F88

triadic

#1F2388 #881F23 #23881F

tetradic

#1F2388 #881F58 #88841F #1F884F

square

#1F2388 #881F58 #88841F #1F884F

split-complementary

#1F2388 #884F1F #58881F

monochromatic

#080924 #141656 #1F2388 #2A30BA #4B51D6

Accessibility & contrast

On white

12.69

#1F2388 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F2388 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2388

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2388	#FFFFFF	#000000	##FFFFFF
##1F2388	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388B

Deuteranopia (green-blind)

#002E86

Tritanopia (blue-blind)

#004053

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2388;
/* rgb */ color: rgb(31, 35, 136);
/* oklch */ color: oklch(33.4% 0.163 271.8);

Tailwind

colors: {
  custom: {
    50: '#6d5fac',
    500: '#1f2388',
    950: '#000000',
  },
}

SCSS

$custom: #1f2388;
$custom-light: #6d5fac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2388",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 136
  },
  "hsl": {
    "h": 237.714,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33435,
    "c": 0.1628,
    "h": 271.8
  },
  "luminance": 0.03271
}

Semantic roles & 50–950 ramp

primary

#1F2388

secondary

#B9B44A

accent

#E042E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F2388

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

Preview Lab → · Contrast checker → · Palette generator →