#1B1372#1B1372

#1B1372 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.3% C 0.152 H 274.5°. Best body text is #FFFFFF at 15.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B1372
RGB	rgb(27, 19, 114)
HSL	hsl(245, 71%, 26%)
HSV	hsv(245, 83%, 45%)
CMYK	cmyk(76.3%, 83.3%, 0%, 55.3%)
CIE-LAB	lab(15.03, 36.05, -52.24)
CIE-LCH	lch(15.03, 63.47, 304.60°)
OKLab	oklab(28.33% 0.0119 -0.1511)
OKLCH	oklch(28.33% 0.152 274.5)
XYZ	xyz(3.7211, 1.9133, 16.0895)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1372 #6A7213

analogous

#133A72 #1B1372 #4A1372

triadic

#1B1372 #721B13 #13721B

tetradic

#1B1372 #72133A #6A7213 #13724A

square

#1B1372 #72133A #6A7213 #13724A

split-complementary

#1B1372 #724A13 #3A7213

monochromatic

#06041A #0F0A3E #1B1372 #271CA6 #3425DB

Accessibility & contrast

On white

15.19

#1B1372 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1B1372 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1372

15.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1372	#FFFFFF	#000000	##FFFFFF
##1B1372	1.00	15.19	1.38	15.19
#FFFFFF	15.19	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A75

Deuteranopia (green-blind)

#002170

Tritanopia (blue-blind)

#003043

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b1372;
/* rgb */ color: rgb(27, 19, 114);
/* oklch */ color: oklch(28.3% 0.152 274.5);

Tailwind

colors: {
  custom: {
    50: '#68539c',
    500: '#1b1372',
    950: '#000000',
  },
}

SCSS

$custom: #1b1372;
$custom-light: #68539c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1372",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 114
  },
  "hsl": {
    "h": 245.053,
    "s": 71.429,
    "l": 26.078
  },
  "oklch": {
    "l": 0.28333,
    "c": 0.15157,
    "h": 274.5
  },
  "luminance": 0.01914
}

Semantic roles & 50–950 ramp

primary

#1B1372

secondary

#9FA938

accent

#EE3ADF

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1372

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

Preview Lab → · Contrast checker → · Palette generator →