#1B2397#1B2397

#1B2397 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.9% C 0.183 H 269.4°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B2397
RGB	rgb(27, 35, 151)
HSL	hsl(236, 70%, 35%)
HSV	hsv(236, 82%, 59%)
CMYK	cmyk(82.1%, 76.8%, 0%, 40.8%)
CIE-LAB	lab(22.54, 39.76, -63.15)
CIE-LCH	lch(22.54, 74.62, 302.19°)
OKLab	oklab(34.9% -0.0018 -0.1829)
OKLCH	oklch(34.9% 0.183 269.4)
XYZ	xyz(6.6370, 3.6687, 29.6305)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2397 #978F1B

analogous

#1B6197 #1B2397 #511B97

triadic

#1B2397 #971B23 #23971B

tetradic

#1B2397 #971B61 #978F1B #1B9751

square

#1B2397 #971B61 #978F1B #1B9751

split-complementary

#1B2397 #97511B #61971B

monochromatic

#080B2F #121763 #1B2397 #242FCB #4D57DF

Accessibility & contrast

On white

12.11

#1B2397 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B2397 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2397

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2397	#FFFFFF	#000000	##FFFFFF
##1B2397	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9A

Deuteranopia (green-blind)

#003095

Tritanopia (blue-blind)

#00465B

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2397;
/* rgb */ color: rgb(27, 35, 151);
/* oklch */ color: oklch(34.9% 0.183 269.4);

Tailwind

colors: {
  custom: {
    50: '#705fb7',
    500: '#1b2397',
    950: '#000000',
  },
}

SCSS

$custom: #1b2397;
$custom-light: #705fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2397",
  "rgb": {
    "r": 27,
    "g": 35,
    "b": 151
  },
  "hsl": {
    "h": 236.129,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.34901,
    "c": 0.18296,
    "h": 269.4
  },
  "luminance": 0.03669
}

Semantic roles & 50–950 ramp

primary

#1B2397

secondary

#C1BA4C

accent

#E13BEC

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1B2397

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

Preview Lab → · Contrast checker → · Palette generator →