#1F2288#1F2288

#1F2288 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.3% C 0.164 H 271.9°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#1F2288
RGB	rgb(31, 34, 136)
HSL	hsl(238, 63%, 33%)
HSV	hsv(238, 77%, 53%)
CMYK	cmyk(77.2%, 75%, 0%, 46.7%)
CIE-LAB	lab(20.87, 35.38, -56.58)
CIE-LCH	lch(20.87, 66.73, 302.02°)
OKLab	oklab(33.28% 0.0055 -0.1638)
OKLCH	oklch(33.28% 0.164 271.9)
XYZ	xyz(5.5795, 3.2123, 23.6138)
Luminance	0.0321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2288 #88851F

analogous

#1F5688 #1F2288 #511F88

triadic

#1F2288 #881F22 #22881F

tetradic

#1F2288 #881F56 #88851F #1F8851

square

#1F2288 #881F56 #88851F #1F8851

split-complementary

#1F2288 #88511F #56881F

monochromatic

#080924 #141656 #1F2288 #2A2EBA #4B4FD6

Accessibility & contrast

On white

12.78

#1F2288 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1F2288 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2288

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2288	#FFFFFF	#000000	##FFFFFF
##1F2288	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378B

Deuteranopia (green-blind)

#002D86

Tritanopia (blue-blind)

#003F53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2288;
/* rgb */ color: rgb(31, 34, 136);
/* oklch */ color: oklch(33.3% 0.164 271.9);

Tailwind

colors: {
  custom: {
    50: '#6d5eac',
    500: '#1f2288',
    950: '#000000',
  },
}

SCSS

$custom: #1f2288;
$custom-light: #6d5eac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2288",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 136
  },
  "hsl": {
    "h": 238.286,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33278,
    "c": 0.16387,
    "h": 271.9
  },
  "luminance": 0.03213
}

Semantic roles & 50–950 ramp

primary

#1F2288

secondary

#B9B64A

accent

#E142E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F2288

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

Preview Lab → · Contrast checker → · Palette generator →