#1B1A7C#1B1A7C

#1B1A7C is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.5% C 0.158 H 272.4°. Best body text is #FFFFFF at 14.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B1A7C
RGB	rgb(27, 26, 124)
HSL	hsl(241, 65%, 29%)
HSV	hsv(241, 79%, 49%)
CMYK	cmyk(78.2%, 79%, 0%, 51.4%)
CIE-LAB	lab(17.58, 35.57, -54.44)
CIE-LCH	lch(17.58, 65.03, 303.16°)
OKLab	oklab(30.48% 0.0066 -0.1576)
OKLCH	oklch(30.48% 0.158 272.4)
XYZ	xyz(4.4583, 2.4266, 19.2983)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1A7C #7B7C1A

analogous

#1A4A7C #1B1A7C #4C1A7C

triadic

#1B1A7C #7C1B1A #1A7C1B

tetradic

#1B1A7C #7C1A4A #7B7C1A #1A7C4C

square

#1B1A7C #7C1A4A #7B7C1A #1A7C4C

split-complementary

#1B1A7C #7C4C1A #4A7C1A

monochromatic

#060519 #100F49 #1B1A7C #2625AF #3C3BD6

Accessibility & contrast

On white

14.14

#1B1A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1B1A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1A7C

14.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1A7C	#FFFFFF	#000000	##FFFFFF
##1B1A7C	1.00	14.14	1.49	14.14
#FFFFFF	14.14	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307F

Deuteranopia (green-blind)

#00267A

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b1a7c;
/* rgb */ color: rgb(27, 26, 124);
/* oklch */ color: oklch(30.5% 0.158 272.4);

Tailwind

colors: {
  custom: {
    50: '#6a58a3',
    500: '#1b1a7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b1a7c;
$custom-light: #6a58a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1a7c",
  "rgb": {
    "r": 27,
    "g": 26,
    "b": 124
  },
  "hsl": {
    "h": 240.612,
    "s": 65.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30477,
    "c": 0.15771,
    "h": 272.4
  },
  "luminance": 0.02427
}

Semantic roles & 50–950 ramp

primary

#1B1A7C

secondary

#AFB042

accent

#E840E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B1A7C

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

Preview Lab → · Contrast checker → · Palette generator →