#1B1D85#1B1D85

#1B1D85 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.166 H 271.2°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B1D85
RGB	rgb(27, 29, 133)
HSL	hsl(239, 66%, 31%)
HSV	hsv(239, 80%, 52%)
CMYK	cmyk(79.7%, 78.2%, 0%, 47.8%)
CIE-LAB	lab(19.24, 36.97, -57.40)
CIE-LCH	lch(19.24, 68.27, 302.78°)
OKLab	oklab(31.96% 0.0035 -0.1662)
OKLCH	oklch(31.96% 0.166 271.2)
XYZ	xyz(5.1236, 2.8046, 22.4571)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1D85 #85831B

analogous

#1B5285 #1B1D85 #4E1B85

triadic

#1B1D85 #851B1D #1D851B

tetradic

#1B1D85 #851B52 #85831B #1B854E

square

#1B1D85 #851B52 #85831B #1B854E

split-complementary

#1B1D85 #854E1B #52851B

monochromatic

#06071F #111252 #1B1D85 #2528B8 #4245D9

Accessibility & contrast

On white

13.45

#1B1D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B1D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1D85

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1D85	#FFFFFF	#000000	##FFFFFF
##1B1D85	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003488

Deuteranopia (green-blind)

#002983

Tritanopia (blue-blind)

#003C50

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b1d85;
/* rgb */ color: rgb(27, 29, 133);
/* oklch */ color: oklch(32.0% 0.166 271.2);

Tailwind

colors: {
  custom: {
    50: '#6c5baa',
    500: '#1b1d85',
    950: '#000000',
  },
}

SCSS

$custom: #1b1d85;
$custom-light: #6c5baa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1d85",
  "rgb": {
    "r": 27,
    "g": 29,
    "b": 133
  },
  "hsl": {
    "h": 238.868,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31957,
    "c": 0.16624,
    "h": 271.2
  },
  "luminance": 0.02805
}

Semantic roles & 50–950 ramp

primary

#1B1D85

secondary

#B8B644

accent

#E63FE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1D85

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

Preview Lab → · Contrast checker → · Palette generator →