#1B2884#1B2884

#1B2884 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.6% C 0.153 H 269.4°. Best body text is #FFFFFF at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B2884
RGB	rgb(27, 40, 132)
HSL	hsl(233, 66%, 31%)
HSV	hsv(233, 80%, 52%)
CMYK	cmyk(79.5%, 69.7%, 0%, 48.2%)
CIE-LAB	lab(21.64, 29.68, -52.82)
CIE-LCH	lch(21.64, 60.59, 299.33°)
OKLab	oklab(33.64% -0.0015 -0.1529)
OKLCH	oklch(33.64% 0.153 269.4)
XYZ	xyz(5.3742, 3.4159, 22.2014)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2884 #84771B

analogous

#1B5C84 #1B2884 #421B84

triadic

#1B2884 #841B28 #28841B

tetradic

#1B2884 #841B5C #84771B #1B8442

square

#1B2884 #841B5C #84771B #1B8442

split-complementary

#1B2884 #84421B #5C841B

monochromatic

#06091E #111951 #1B2884 #2537B7 #4154D8

Accessibility & contrast

On white

12.47

#1B2884 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B2884 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2884

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2884	#FFFFFF	#000000	##FFFFFF
##1B2884	1.00	12.47	1.68	12.47
#FFFFFF	12.47	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003987

Deuteranopia (green-blind)

#002F82

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2884;
/* rgb */ color: rgb(27, 40, 132);
/* oklch */ color: oklch(33.6% 0.153 269.4);

Tailwind

colors: {
  custom: {
    50: '#6a62a9',
    500: '#1b2884',
    950: '#000000',
  },
}

SCSS

$custom: #1b2884;
$custom-light: #6a62a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2884",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 132
  },
  "hsl": {
    "h": 232.571,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33642,
    "c": 0.15292,
    "h": 269.4
  },
  "luminance": 0.03417
}

Semantic roles & 50–950 ramp

primary

#1B2884

secondary

#B7A943

accent

#D43FE9

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1B2884

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

Preview Lab → · Contrast checker → · Palette generator →