#1B248F#1B248F

#1B248F is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.2% C 0.172 H 269.7°. Best body text is #FFFFFF at 12.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B248F
RGB	rgb(27, 36, 143)
HSL	hsl(235, 68%, 33%)
HSV	hsv(235, 81%, 56%)
CMYK	cmyk(81.1%, 74.8%, 0%, 43.9%)
CIE-LAB	lab(21.86, 36.32, -59.33)
CIE-LCH	lch(21.86, 69.56, 301.47°)
OKLab	oklab(34.15% -0.0009 -0.1719)
OKLCH	oklch(34.15% 0.172 269.7)
XYZ	xyz(6.0391, 3.4772, 26.3342)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B248F #8F861B

analogous

#1B5E8F #1B248F #4C1B8F

triadic

#1B248F #8F1B24 #248F1B

tetradic

#1B248F #8F1B5E #8F861B #1B8F4C

square

#1B248F #8F1B5E #8F861B #1B8F4C

split-complementary

#1B248F #8F4C1B #5E8F1B

monochromatic

#080A28 #11175C #1B248F #2531C2 #4853DC

Accessibility & contrast

On white

12.38

#1B248F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B248F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B248F

12.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B248F	#FFFFFF	#000000	##FFFFFF
##1B248F	1.00	12.38	1.70	12.38
#FFFFFF	12.38	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A92

Deuteranopia (green-blind)

#002F8D

Tritanopia (blue-blind)

#004357

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b248f;
/* rgb */ color: rgb(27, 36, 143);
/* oklch */ color: oklch(34.2% 0.172 269.7);

Tailwind

colors: {
  custom: {
    50: '#6e60b1',
    500: '#1b248f',
    950: '#000000',
  },
}

SCSS

$custom: #1b248f;
$custom-light: #6e60b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b248f",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 143
  },
  "hsl": {
    "h": 235.345,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.34151,
    "c": 0.17186,
    "h": 269.7
  },
  "luminance": 0.03478
}

Semantic roles & 50–950 ramp

primary

#1B248F

secondary

#BEB548

accent

#DE3DEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1B248F

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

Preview Lab → · Contrast checker → · Palette generator →