#1B1981#1B1981

#1B1981 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.9% C 0.165 H 272.0°. Best body text is #FFFFFF at 13.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B1981
RGB	rgb(27, 25, 129)
HSL	hsl(241, 68%, 30%)
HSV	hsv(241, 81%, 51%)
CMYK	cmyk(79.1%, 80.6%, 0%, 49.4%)
CIE-LAB	lab(17.98, 37.86, -56.97)
CIE-LCH	lch(17.98, 68.41, 303.61°)
OKLab	oklab(30.93% 0.0059 -0.1649)
OKLCH	oklch(30.93% 0.165 272)
XYZ	xyz(4.7607, 2.5127, 20.9987)
Luminance	0.0251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1981 #7F8119

analogous

#194B81 #1B1981 #4F1981

triadic

#1B1981 #811B19 #19811B

tetradic

#1B1981 #81194B #7F8119 #19814F

square

#1B1981 #81194B #7F8119 #19814F

split-complementary

#1B1981 #814F19 #4B8119

monochromatic

#06051A #100F4E #1B1981 #2623B4 #3E3BD9

Accessibility & contrast

On white

13.98

#1B1981 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1B1981 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1981

13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1981	#FFFFFF	#000000	##FFFFFF
##1B1981	1.00	13.98	1.50	13.98
#FFFFFF	13.98	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003184

Deuteranopia (green-blind)

#00277F

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b1981;
/* rgb */ color: rgb(27, 25, 129);
/* oklch */ color: oklch(30.9% 0.165 272.0);

Tailwind

colors: {
  custom: {
    50: '#6b58a7',
    500: '#1b1981',
    950: '#000000',
  },
}

SCSS

$custom: #1b1981;
$custom-light: #6b58a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1981",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 129
  },
  "hsl": {
    "h": 241.154,
    "s": 67.532,
    "l": 30.196
  },
  "oklch": {
    "l": 0.30927,
    "c": 0.165,
    "h": 272
  },
  "luminance": 0.02513
}

Semantic roles & 50–950 ramp

primary

#1B1981

secondary

#B3B541

accent

#EA3DE7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1B1981

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

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