#1B217B#1B217B

#1B217B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.5% C 0.149 H 271.3°. Best body text is #FFFFFF at 13.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B217B
RGB	rgb(27, 33, 123)
HSL	hsl(236, 64%, 29%)
HSV	hsv(236, 78%, 48%)
CMYK	cmyk(78%, 73.2%, 0%, 51.8%)
CIE-LAB	lab(19.01, 30.89, -51.44)
CIE-LCH	lch(19.01, 60.00, 300.98°)
OKLab	oklab(31.46% 0.0033 -0.1489)
OKLCH	oklch(31.46% 0.149 271.3)
XYZ	xyz(4.5698, 2.7503, 19.0251)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B217B #7B751B

analogous

#1B517B #1B217B #451B7B

triadic

#1B217B #7B1B21 #217B1B

tetradic

#1B217B #7B1B51 #7B751B #1B7B45

square

#1B217B #7B1B51 #7B751B #1B7B45

split-complementary

#1B217B #7B451B #517B1B

monochromatic

#060719 #101449 #1B217B #262EAD #3C46D4

Accessibility & contrast

On white

13.55

#1B217B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B217B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B217B

13.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B217B	#FFFFFF	#000000	##FFFFFF
##1B217B	1.00	13.55	1.55	13.55
#FFFFFF	13.55	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#003A4B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b217b;
/* rgb */ color: rgb(27, 33, 123);
/* oklch */ color: oklch(31.5% 0.149 271.3);

Tailwind

colors: {
  custom: {
    50: '#695da2',
    500: '#1b217b',
    950: '#000000',
  },
}

SCSS

$custom: #1b217b;
$custom-light: #695da2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b217b",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 123
  },
  "hsl": {
    "h": 236.25,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.31464,
    "c": 0.14892,
    "h": 271.3
  },
  "luminance": 0.02751
}

Semantic roles & 50–950 ramp

primary

#1B217B

secondary

#AFA843

accent

#DD41E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B217B

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

Preview Lab → · Contrast checker → · Palette generator →