#1B1B85#1B1B85

#1B1B85 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.168 H 271.5°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B1B85
RGB	rgb(27, 27, 133)
HSL	hsl(240, 66%, 31%)
HSV	hsv(240, 80%, 52%)
CMYK	cmyk(79.7%, 79.7%, 0%, 47.8%)
CIE-LAB	lab(18.84, 38.11, -58.07)
CIE-LCH	lch(18.84, 69.46, 303.28°)
OKLab	oklab(31.67% 0.0043 -0.1681)
OKLCH	oklch(31.67% 0.168 271.5)
XYZ	xyz(5.0761, 2.7098, 22.4413)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1B85 #85851B

analogous

#1B5085 #1B1B85 #501B85

triadic

#1B1B85 #851B1B #1B851B

tetradic

#1B1B85 #851B50 #85851B #1B8550

square

#1B1B85 #851B50 #85851B #1B8550

split-complementary

#1B1B85 #85501B #50851B

monochromatic

#06061F #111152 #1B1B85 #2525B8 #4242D9

Accessibility & contrast

On white

13.62

#1B1B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B1B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1B85

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1B85	#FFFFFF	#000000	##FFFFFF
##1B1B85	1.00	13.62	1.54	13.62
#FFFFFF	13.62	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003388

Deuteranopia (green-blind)

#002883

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b1b85;
/* rgb */ color: rgb(27, 27, 133);
/* oklch */ color: oklch(31.7% 0.168 271.5);

Tailwind

colors: {
  custom: {
    50: '#6c59aa',
    500: '#1b1b85',
    950: '#000000',
  },
}

SCSS

$custom: #1b1b85;
$custom-light: #6c59aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1b85",
  "rgb": {
    "r": 27,
    "g": 27,
    "b": 133
  },
  "hsl": {
    "h": 240,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31674,
    "c": 0.16816,
    "h": 271.5
  },
  "luminance": 0.0271
}

Semantic roles & 50–950 ramp

primary

#1B1B85

secondary

#B8B844

accent

#E93FE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1B85

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

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