#1B1D7D#1B1D7D

#1B1D7D is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.156 H 271.8°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B1D7D
RGB	rgb(27, 29, 125)
HSL	hsl(239, 64%, 30%)
HSV	hsv(239, 78%, 49%)
CMYK	cmyk(78.4%, 76.8%, 0%, 51%)
CIE-LAB	lab(18.33, 34.13, -53.85)
CIE-LCH	lch(18.33, 63.75, 302.37°)
OKLab	oklab(31.04% 0.005 -0.1559)
OKLCH	oklch(31.04% 0.156 271.8)
XYZ	xyz(4.5918, 2.5919, 19.6564)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1D7D #7D7B1B

analogous

#1B4E7D #1B1D7D #4A1B7D

triadic

#1B1D7D #7D1B1D #1D7D1B

tetradic

#1B1D7D #7D1B4E #7D7B1B #1B7D4A

square

#1B1D7D #7D1B4E #7D7B1B #1B7D4A

split-complementary

#1B1D7D #7D4A1B #4E7D1B

monochromatic

#050619 #10114B #1B1D7D #2629AF #3D40D5

Accessibility & contrast

On white

13.83

#1B1D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1B1D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1D7D

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1D7D	#FFFFFF	#000000	##FFFFFF
##1B1D7D	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003180

Deuteranopia (green-blind)

#00287B

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b1d7d;
/* rgb */ color: rgb(27, 29, 125);
/* oklch */ color: oklch(31.0% 0.156 271.8);

Tailwind

colors: {
  custom: {
    50: '#6a5aa4',
    500: '#1b1d7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b1d7d;
$custom-light: #6a5aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1d7d",
  "rgb": {
    "r": 27,
    "g": 29,
    "b": 125
  },
  "hsl": {
    "h": 238.776,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31039,
    "c": 0.15595,
    "h": 271.8
  },
  "luminance": 0.02592
}

Semantic roles & 50–950 ramp

primary

#1B1D7D

secondary

#B1AF43

accent

#E440E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1B1D7D

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

Preview Lab → · Contrast checker → · Palette generator →