#1B1E83#1B1E83

#1B1E83 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.9% C 0.163 H 271.2°. Best body text is #FFFFFF at 13.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B1E83
RGB	rgb(27, 30, 131)
HSL	hsl(238, 66%, 31%)
HSV	hsv(238, 79%, 51%)
CMYK	cmyk(79.4%, 77.1%, 0%, 48.6%)
CIE-LAB	lab(19.22, 35.67, -56.17)
CIE-LCH	lch(19.22, 66.54, 302.41°)
OKLab	oklab(31.87% 0.0035 -0.1626)
OKLCH	oklch(31.87% 0.163 271.2)
XYZ	xyz(5.0116, 2.7997, 21.7446)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1E83 #83801B

analogous

#1B5283 #1B1E83 #4C1B83

triadic

#1B1E83 #831B1E #1E831B

tetradic

#1B1E83 #831B52 #83801B #1B834C

square

#1B1E83 #831B52 #83801B #1B834C

split-complementary

#1B1E83 #834C1B #52831B

monochromatic

#06071E #111250 #1B1E83 #252AB6 #4145D8

Accessibility & contrast

On white

13.46

#1B1E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B1E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1E83

13.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1E83	#FFFFFF	#000000	##FFFFFF
##1B1E83	1.00	13.46	1.56	13.46
#FFFFFF	13.46	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003486

Deuteranopia (green-blind)

#002981

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b1e83;
/* rgb */ color: rgb(27, 30, 131);
/* oklch */ color: oklch(31.9% 0.163 271.2);

Tailwind

colors: {
  custom: {
    50: '#6b5ba8',
    500: '#1b1e83',
    950: '#000000',
  },
}

SCSS

$custom: #1b1e83;
$custom-light: #6b5ba8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1e83",
  "rgb": {
    "r": 27,
    "g": 30,
    "b": 131
  },
  "hsl": {
    "h": 238.269,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.31875,
    "c": 0.16269,
    "h": 271.2
  },
  "luminance": 0.028
}

Semantic roles & 50–950 ramp

primary

#1B1E83

secondary

#B6B343

accent

#E43FE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1E83

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

Preview Lab → · Contrast checker → · Palette generator →