#1F248A#1F248A

#1F248A is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.8% C 0.164 H 271.5°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F248A
RGB	rgb(31, 36, 138)
HSL	hsl(237, 63%, 33%)
HSV	hsv(237, 78%, 54%)
CMYK	cmyk(77.5%, 73.9%, 0%, 45.9%)
CIE-LAB	lab(21.53, 34.86, -56.75)
CIE-LCH	lch(21.53, 66.60, 301.56°)
OKLab	oklab(33.81% 0.0042 -0.1643)
OKLCH	oklch(33.81% 0.164 271.5)
XYZ	xyz(5.7818, 3.3874, 24.3889)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F248A #8A851F

analogous

#1F598A #1F248A #4F1F8A

triadic

#1F248A #8A1F24 #248A1F

tetradic

#1F248A #8A1F59 #8A851F #1F8A4F

square

#1F248A #8A1F59 #8A851F #1F8A4F

split-complementary

#1F248A #8A4F1F #598A1F

monochromatic

#090A26 #141758 #1F248A #2A31BC #4C53D7

Accessibility & contrast

On white

12.52

#1F248A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F248A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F248A

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F248A	#FFFFFF	#000000	##FFFFFF
##1F248A	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398D

Deuteranopia (green-blind)

#002E88

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f248a;
/* rgb */ color: rgb(31, 36, 138);
/* oklch */ color: oklch(33.8% 0.164 271.5);

Tailwind

colors: {
  custom: {
    50: '#6e5fad',
    500: '#1f248a',
    950: '#000000',
  },
}

SCSS

$custom: #1f248a;
$custom-light: #6e5fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f248a",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 138
  },
  "hsl": {
    "h": 237.196,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33813,
    "c": 0.16432,
    "h": 271.5
  },
  "luminance": 0.03388
}

Semantic roles & 50–950 ramp

primary

#1F248A

secondary

#BAB44B

accent

#DF41E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F248A

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

Preview Lab → · Contrast checker → · Palette generator →