#1B1E8A#1B1E8A

#1B1E8A is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.7% C 0.172 H 270.7°. Best body text is #FFFFFF at 13.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B1E8A
RGB	rgb(27, 30, 138)
HSL	hsl(238, 67%, 32%)
HSV	hsv(238, 80%, 54%)
CMYK	cmyk(80.4%, 78.3%, 0%, 45.9%)
CIE-LAB	lab(20.03, 38.13, -59.24)
CIE-LCH	lch(20.03, 70.45, 302.77°)
OKLab	oklab(32.68% 0.0022 -0.1716)
OKLCH	oklch(32.68% 0.172 270.7)
XYZ	xyz(5.5022, 2.9959, 24.3281)
Luminance	0.0300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1E8A #8A871B

analogous

#1B568A #1B1E8A #4F1B8A

triadic

#1B1E8A #8A1B1E #1E8A1B

tetradic

#1B1E8A #8A1B56 #8A871B #1B8A4F

square

#1B1E8A #8A1B56 #8A871B #1B8A4F

split-complementary

#1B1E8A #8A4F1B #568A1B

monochromatic

#070824 #111357 #1B1E8A #2529BD #4549DB

Accessibility & contrast

On white

13.13

#1B1E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B1E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1E8A

13.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1E8A	#FFFFFF	#000000	##FFFFFF
##1B1E8A	1.00	13.13	1.60	13.13
#FFFFFF	13.13	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002B88

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b1e8a;
/* rgb */ color: rgb(27, 30, 138);
/* oklch */ color: oklch(32.7% 0.172 270.7);

Tailwind

colors: {
  custom: {
    50: '#6d5bad',
    500: '#1b1e8a',
    950: '#000000',
  },
}

SCSS

$custom: #1b1e8a;
$custom-light: #6d5bad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1e8a",
  "rgb": {
    "r": 27,
    "g": 30,
    "b": 138
  },
  "hsl": {
    "h": 238.378,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32681,
    "c": 0.17157,
    "h": 270.7
  },
  "luminance": 0.02997
}

Semantic roles & 50–950 ramp

primary

#1B1E8A

secondary

#BCB945

accent

#E63EEA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1E8A

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

Preview Lab → · Contrast checker → · Palette generator →