#1B1E72#1B1E72

#1B1E72 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.0% C 0.140 H 272.6°. Best body text is #FFFFFF at 14.24:1 contrast (WCAG AA passes).

Color values

HEX	#1B1E72
RGB	rgb(27, 30, 114)
HSL	hsl(238, 62%, 28%)
HSV	hsv(238, 76%, 45%)
CMYK	cmyk(76.3%, 73.7%, 0%, 55.3%)
CIE-LAB	lab(17.35, 29.48, -48.41)
CIE-LCH	lch(17.35, 56.68, 301.34°)
OKLab	oklab(29.98% 0.0063 -0.14)
OKLCH	oklch(29.98% 0.14 272.6)
XYZ	xyz(3.9525, 2.3761, 16.1666)
Luminance	0.0238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1E72 #726F1B

analogous

#1B4972 #1B1E72 #431B72

triadic

#1B1E72 #721B1E #1E721B

tetradic

#1B1E72 #721B49 #726F1B #1B7243

square

#1B1E72 #721B49 #726F1B #1B7243

split-complementary

#1B1E72 #72431B #49721B

monochromatic

#060719 #0F1141 #1B1E72 #272BA3 #383DD0

Accessibility & contrast

On white

14.24

#1B1E72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1B1E72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1E72

14.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1E72	#FFFFFF	#000000	##FFFFFF
##1B1E72	1.00	14.24	1.48	14.24
#FFFFFF	14.24	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F75

Deuteranopia (green-blind)

#002670

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b1e72;
/* rgb */ color: rgb(27, 30, 114);
/* oklch */ color: oklch(30.0% 0.140 272.6);

Tailwind

colors: {
  custom: {
    50: '#675a9b',
    500: '#1b1e72',
    950: '#000000',
  },
}

SCSS

$custom: #1b1e72;
$custom-light: #675a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1e72",
  "rgb": {
    "r": 27,
    "g": 30,
    "b": 114
  },
  "hsl": {
    "h": 237.931,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29977,
    "c": 0.14017,
    "h": 272.6
  },
  "luminance": 0.02376
}

Semantic roles & 50–950 ramp

primary

#1B1E72

secondary

#A7A342

accent

#DF43E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B1E72

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

Preview Lab → · Contrast checker → · Palette generator →