#1B215A#1B215A

#1B215A is a dark, moderate blue. Relative luminance 0.021; OKLCH L 28.1% C 0.101 H 273.4°. Best body text is #FFFFFF at 14.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B215A
RGB	rgb(27, 33, 90)
HSL	hsl(234, 54%, 23%)
HSV	hsv(234, 70%, 35%)
CMYK	cmyk(70%, 63.3%, 0%, 64.7%)
CIE-LAB	lab(15.79, 18.13, -35.18)
CIE-LCH	lch(15.79, 39.57, 297.27°)
OKLab	oklab(28.12% 0.006 -0.1013)
OKLCH	oklch(28.12% 0.101 273.4)
XYZ	xyz(2.8407, 2.0587, 9.9185)
Luminance	0.0206 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B215A #5A541B

analogous

#1B405A #1B215A #341B5A

triadic

#1B215A #5A1B21 #215A1B

tetradic

#1B215A #5A1B40 #5A541B #1B5A34

square

#1B215A #5A1B40 #5A541B #1B5A34

split-complementary

#1B215A #5A341B #405A1B

monochromatic

#070918 #0D102B #1B215A #293289 #3744B8

Accessibility & contrast

On white

14.87

#1B215A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1B215A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B215A

14.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B215A	#FFFFFF	#000000	##FFFFFF
##1B215A	1.00	14.87	1.41	14.87
#FFFFFF	14.87	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A5C

Deuteranopia (green-blind)

#002559

Tritanopia (blue-blind)

#002F3A

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1b215a;
/* rgb */ color: rgb(27, 33, 90);
/* oklch */ color: oklch(28.1% 0.101 273.4);

Tailwind

colors: {
  custom: {
    50: '#605c89',
    500: '#1b215a',
    950: '#000000',
  },
}

SCSS

$custom: #1b215a;
$custom-light: #605c89;
$custom-dark: #000000;

JSON

{
  "hex": "#1b215a",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 90
  },
  "hsl": {
    "h": 234.286,
    "s": 53.846,
    "l": 22.941
  },
  "oklch": {
    "l": 0.28123,
    "c": 0.10144,
    "h": 273.4
  },
  "luminance": 0.02059
}

Semantic roles & 50–950 ramp

primary

#1B215A

secondary

#908841

accent

#CF4BDD

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05040B

muted

#79797C

Preview Lab

Preview with #1B215A

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

Preview Lab → · Contrast checker → · Palette generator →