#1B248C#1B248C

#1B248C is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.8% C 0.168 H 269.8°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B248C
RGB	rgb(27, 36, 140)
HSL	hsl(235, 68%, 33%)
HSV	hsv(235, 81%, 55%)
CMYK	cmyk(80.7%, 74.3%, 0%, 45.1%)
CIE-LAB	lab(21.53, 35.23, -58.00)
CIE-LCH	lch(21.53, 67.87, 301.28°)
OKLab	oklab(33.82% -0.0005 -0.168)
OKLCH	oklch(33.82% 0.168 269.8)
XYZ	xyz(5.8149, 3.3876, 25.1533)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B248C #8C831B

analogous

#1B5D8C #1B248C #4A1B8C

triadic

#1B248C #8C1B24 #248C1B

tetradic

#1B248C #8C1B5D #8C831B #1B8C4A

square

#1B248C #8C1B5D #8C831B #1B8C4A

split-complementary

#1B248C #8C4A1B #5D8C1B

monochromatic

#070A25 #111759 #1B248C #2531BF #4652DB

Accessibility & contrast

On white

12.52

#1B248C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B248C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B248C

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B248C	#FFFFFF	#000000	##FFFFFF
##1B248C	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)

#00398F

Deuteranopia (green-blind)

#002E8A

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b248c;
/* rgb */ color: rgb(27, 36, 140);
/* oklch */ color: oklch(33.8% 0.168 269.8);

Tailwind

colors: {
  custom: {
    50: '#6d5faf',
    500: '#1b248c',
    950: '#000000',
  },
}

SCSS

$custom: #1b248c;
$custom-light: #6d5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b248c",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 140
  },
  "hsl": {
    "h": 235.221,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33819,
    "c": 0.16801,
    "h": 269.8
  },
  "luminance": 0.03388
}

Semantic roles & 50–950 ramp

primary

#1B248C

secondary

#BDB346

accent

#DD3DEB

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B248C

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

Preview Lab → · Contrast checker → · Palette generator →