#1B2984#1B2984

#1B2984 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.8% C 0.152 H 269.2°. Best body text is #FFFFFF at 12.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B2984
RGB	rgb(27, 41, 132)
HSL	hsl(232, 66%, 31%)
HSV	hsv(232, 80%, 52%)
CMYK	cmyk(79.5%, 68.9%, 0%, 48.2%)
CIE-LAB	lab(21.89, 29.01, -52.41)
CIE-LCH	lch(21.89, 59.91, 298.96°)
OKLab	oklab(33.82% -0.0021 -0.1517)
OKLCH	oklch(33.82% 0.152 269.2)
XYZ	xyz(5.4084, 3.4842, 22.2128)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2984 #84761B

analogous

#1B5D84 #1B2984 #411B84

triadic

#1B2984 #841B29 #29841B

tetradic

#1B2984 #841B5D #84761B #1B8441

square

#1B2984 #841B5D #84761B #1B8441

split-complementary

#1B2984 #84411B #5D841B

monochromatic

#06091E #111951 #1B2984 #2539B7 #4155D8

Accessibility & contrast

On white

12.37

#1B2984 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B2984 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2984

12.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2984	#FFFFFF	#000000	##FFFFFF
##1B2984	1.00	12.37	1.70	12.37
#FFFFFF	12.37	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003987

Deuteranopia (green-blind)

#002F82

Tritanopia (blue-blind)

#004253

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2984;
/* rgb */ color: rgb(27, 41, 132);
/* oklch */ color: oklch(33.8% 0.152 269.2);

Tailwind

colors: {
  custom: {
    50: '#6a63a9',
    500: '#1b2984',
    950: '#000000',
  },
}

SCSS

$custom: #1b2984;
$custom-light: #6a63a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2984",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 132
  },
  "hsl": {
    "h": 232,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33824,
    "c": 0.15172,
    "h": 269.2
  },
  "luminance": 0.03485
}

Semantic roles & 50–950 ramp

primary

#1B2984

secondary

#B7A843

accent

#D23FE9

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1B2984

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

Preview Lab → · Contrast checker → · Palette generator →