#1B248D#1B248D

#1B248D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.169 H 269.8°. Best body text is #FFFFFF at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B248D
RGB	rgb(27, 36, 141)
HSL	hsl(235, 68%, 33%)
HSV	hsv(235, 81%, 55%)
CMYK	cmyk(80.9%, 74.5%, 0%, 44.7%)
CIE-LAB	lab(21.64, 35.60, -58.45)
CIE-LCH	lch(21.64, 68.43, 301.34°)
OKLab	oklab(33.93% -0.0006 -0.1693)
OKLCH	oklch(33.93% 0.169 269.8)
XYZ	xyz(5.8889, 3.4172, 25.5434)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B248D #8D841B

analogous

#1B5D8D #1B248D #4B1B8D

triadic

#1B248D #8D1B24 #248D1B

tetradic

#1B248D #8D1B5D #8D841B #1B8D4B

square

#1B248D #8D1B5D #8D841B #1B8D4B

split-complementary

#1B248D #8D4B1B #5D8D1B

monochromatic

#070A26 #11175A #1B248D #2531C0 #4752DC

Accessibility & contrast

On white

12.47

#1B248D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B248D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B248D

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B248D	#FFFFFF	#000000	##FFFFFF
##1B248D	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)

#003990

Deuteranopia (green-blind)

#002E8B

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b248d;
/* rgb */ color: rgb(27, 36, 141);
/* oklch */ color: oklch(33.9% 0.169 269.8);

Tailwind

colors: {
  custom: {
    50: '#6d5faf',
    500: '#1b248d',
    950: '#000000',
  },
}

SCSS

$custom: #1b248d;
$custom-light: #6d5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b248d",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 141
  },
  "hsl": {
    "h": 235.263,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33929,
    "c": 0.1693,
    "h": 269.8
  },
  "luminance": 0.03418
}

Semantic roles & 50–950 ramp

primary

#1B248D

secondary

#BDB446

accent

#DD3DEB

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080511

muted

#7B7980

Preview Lab

Preview with #1B248D

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

Preview Lab → · Contrast checker → · Palette generator →