#1B2172#1B2172

#1B2172 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.137 H 271.9°. Best body text is #FFFFFF at 13.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B2172
RGB	rgb(27, 33, 114)
HSL	hsl(236, 62%, 28%)
HSV	hsv(236, 76%, 45%)
CMYK	cmyk(76.3%, 71.1%, 0%, 55.3%)
CIE-LAB	lab(18.08, 27.50, -47.21)
CIE-LCH	lch(18.08, 54.63, 300.22°)
OKLab	oklab(30.5% 0.0045 -0.1365)
OKLCH	oklch(30.5% 0.137 271.9)
XYZ	xyz(4.0321, 2.5352, 16.1932)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2172 #726C1B

analogous

#1B4C72 #1B2172 #401B72

triadic

#1B2172 #721B21 #21721B

tetradic

#1B2172 #721B4C #726C1B #1B7240

square

#1B2172 #721B4C #726C1B #1B7240

split-complementary

#1B2172 #72401B #4C721B

monochromatic

#060719 #0F1341 #1B2172 #272FA3 #3842D0

Accessibility & contrast

On white

13.93

#1B2172 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1B2172 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2172

13.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2172	#FFFFFF	#000000	##FFFFFF
##1B2172	1.00	13.93	1.51	13.93
#FFFFFF	13.93	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003074

Deuteranopia (green-blind)

#002870

Tritanopia (blue-blind)

#003746

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b2172;
/* rgb */ color: rgb(27, 33, 114);
/* oklch */ color: oklch(30.5% 0.137 271.9);

Tailwind

colors: {
  custom: {
    50: '#665c9b',
    500: '#1b2172',
    950: '#000000',
  },
}

SCSS

$custom: #1b2172;
$custom-light: #665c9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2172",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 114
  },
  "hsl": {
    "h": 235.862,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.30503,
    "c": 0.1366,
    "h": 271.9
  },
  "luminance": 0.02536
}

Semantic roles & 50–950 ramp

primary

#1B2172

secondary

#A7A042

accent

#DA43E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2172

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

Preview Lab → · Contrast checker → · Palette generator →