#1B208B#1B208B

#1B208B is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.1% C 0.171 H 270.4°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B208B
RGB	rgb(27, 32, 139)
HSL	hsl(237, 67%, 33%)
HSV	hsv(237, 81%, 55%)
CMYK	cmyk(80.6%, 77%, 0%, 45.5%)
CIE-LAB	lab(20.56, 37.31, -59.00)
CIE-LCH	lch(20.56, 69.80, 302.31°)
OKLab	oklab(33.09% 0.0013 -0.1709)
OKLCH	oklch(33.09% 0.171 270.4)
XYZ	xyz(5.6271, 3.1295, 24.7286)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B208B #8B861B

analogous

#1B588B #1B208B #4E1B8B

triadic

#1B208B #8B1B20 #208B1B

tetradic

#1B208B #8B1B58 #8B861B #1B8B4E

square

#1B208B #8B1B58 #8B861B #1B8B4E

split-complementary

#1B208B #8B4E1B #588B1B

monochromatic

#070825 #111458 #1B208B #252CBE #454CDB

Accessibility & contrast

On white

12.92

#1B208B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B208B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B208B

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B208B	#FFFFFF	#000000	##FFFFFF
##1B208B	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378E

Deuteranopia (green-blind)

#002C89

Tritanopia (blue-blind)

#004054

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b208b;
/* rgb */ color: rgb(27, 32, 139);
/* oklch */ color: oklch(33.1% 0.171 270.4);

Tailwind

colors: {
  custom: {
    50: '#6d5dae',
    500: '#1b208b',
    950: '#000000',
  },
}

SCSS

$custom: #1b208b;
$custom-light: #6d5dae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b208b",
  "rgb": {
    "r": 27,
    "g": 32,
    "b": 139
  },
  "hsl": {
    "h": 237.321,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.33088,
    "c": 0.17087,
    "h": 270.4
  },
  "luminance": 0.0313
}

Semantic roles & 50–950 ramp

primary

#1B208B

secondary

#BCB745

accent

#E33DEA

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B208B

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

Preview Lab → · Contrast checker → · Palette generator →