#1B1699#1B1699

#1B1699 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.5% C 0.196 H 270.3°. Best body text is #FFFFFF at 12.95:1 contrast (WCAG AA passes).

Color values

HEX	#1B1699
RGB	rgb(27, 22, 153)
HSL	hsl(242, 75%, 34%)
HSV	hsv(242, 86%, 60%)
CMYK	cmyk(82.4%, 85.6%, 0%, 40%)
CIE-LAB	lab(20.46, 47.16, -67.83)
CIE-LCH	lch(20.46, 82.62, 304.81°)
OKLab	oklab(33.52% 0.001 -0.1963)
OKLCH	oklch(33.52% 0.196 270.3)
XYZ	xyz(6.4867, 3.1060, 30.3885)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1699 #949916

analogous

#165399 #1B1699 #5D1699

triadic

#1B1699 #991B16 #16991B

tetradic

#1B1699 #991653 #949916 #16995D

square

#1B1699 #991653 #949916 #16995D

split-complementary

#1B1699 #995D16 #539916

monochromatic

#08072E #120E63 #1B1699 #241ECF #4B45E4

Accessibility & contrast

On white

12.95

#1B1699 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1B1699 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1699

12.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1699	#FFFFFF	#000000	##FFFFFF
##1B1699	1.00	12.95	1.62	12.95
#FFFFFF	12.95	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00389C

Deuteranopia (green-blind)

#002A97

Tritanopia (blue-blind)

#00415A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b1699;
/* rgb */ color: rgb(27, 22, 153);
/* oklch */ color: oklch(33.5% 0.196 270.3);

Tailwind

colors: {
  custom: {
    50: '#7258b8',
    500: '#1b1699',
    950: '#000000',
  },
}

SCSS

$custom: #1b1699;
$custom-light: #7258b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1699",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 153
  },
  "hsl": {
    "h": 242.29,
    "s": 74.857,
    "l": 34.314
  },
  "oklch": {
    "l": 0.33516,
    "c": 0.1963,
    "h": 270.3
  },
  "luminance": 0.03107
}

Semantic roles & 50–950 ramp

primary

#1B1699

secondary

#C0C546

accent

#F136EA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B1699

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

Preview Lab → · Contrast checker → · Palette generator →