#1B1C8D#1B1C8D

#1B1C8D is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.177 H 270.7°. Best body text is #FFFFFF at 13.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B1C8D
RGB	rgb(27, 28, 141)
HSL	hsl(239, 68%, 33%)
HSV	hsv(239, 81%, 55%)
CMYK	cmyk(80.9%, 80.1%, 0%, 44.7%)
CIE-LAB	lab(19.99, 40.29, -61.19)
CIE-LCH	lch(19.99, 73.26, 303.36°)
OKLab	oklab(32.76% 0.0023 -0.1772)
OKLCH	oklch(32.76% 0.177 270.7)
XYZ	xyz(5.6733, 2.9860, 25.4715)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1C8D #8D8C1B

analogous

#1B558D #1B1C8D #531B8D

triadic

#1B1C8D #8D1B1C #1C8D1B

tetradic

#1B1C8D #8D1B55 #8D8C1B #1B8D53

square

#1B1C8D #8D1B55 #8D8C1B #1B8D53

split-complementary

#1B1C8D #8D531B #558D1B

monochromatic

#070826 #11125A #1B1C8D #2526C0 #4748DC

Accessibility & contrast

On white

13.15

#1B1C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B1C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1C8D

13.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1C8D	#FFFFFF	#000000	##FFFFFF
##1B1C8D	1.00	13.15	1.60	13.15
#FFFFFF	13.15	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003690

Deuteranopia (green-blind)

#002A8B

Tritanopia (blue-blind)

#003F54

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b1c8d;
/* rgb */ color: rgb(27, 28, 141);
/* oklch */ color: oklch(32.8% 0.177 270.7);

Tailwind

colors: {
  custom: {
    50: '#6e5ab0',
    500: '#1b1c8d',
    950: '#000000',
  },
}

SCSS

$custom: #1b1c8d;
$custom-light: #6e5ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1c8d",
  "rgb": {
    "r": 27,
    "g": 28,
    "b": 141
  },
  "hsl": {
    "h": 239.474,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.32756,
    "c": 0.17718,
    "h": 270.7
  },
  "luminance": 0.02987
}

Semantic roles & 50–950 ramp

primary

#1B1C8D

secondary

#BDBC46

accent

#E93DEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B1C8D

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

Preview Lab → · Contrast checker → · Palette generator →