#1B2D84#1B2D84

#1B2D84 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.6% C 0.147 H 268.3°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D84
RGB	rgb(27, 45, 132)
HSL	hsl(230, 66%, 31%)
HSV	hsv(230, 80%, 52%)
CMYK	cmyk(79.5%, 65.9%, 0%, 48.2%)
CIE-LAB	lab(22.91, 26.29, -50.73)
CIE-LCH	lch(22.91, 57.14, 297.40°)
OKLab	oklab(34.58% -0.0045 -0.1467)
OKLCH	oklch(34.58% 0.147 268.3)
XYZ	xyz(5.5538, 3.7751, 22.2613)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D84 #84721B

analogous

#1B6184 #1B2D84 #3D1B84

triadic

#1B2D84 #841B2D #2D841B

tetradic

#1B2D84 #841B61 #84721B #1B843D

square

#1B2D84 #841B61 #84721B #1B843D

split-complementary

#1B2D84 #843D1B #61841B

monochromatic

#060A1E #111C51 #1B2D84 #253EB7 #415BD8

Accessibility & contrast

On white

11.96

#1B2D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1B2D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D84

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D84	#FFFFFF	#000000	##FFFFFF
##1B2D84	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C87

Deuteranopia (green-blind)

#003282

Tritanopia (blue-blind)

#004454

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2d84;
/* rgb */ color: rgb(27, 45, 132);
/* oklch */ color: oklch(34.6% 0.147 268.3);

Tailwind

colors: {
  custom: {
    50: '#6a65a9',
    500: '#1b2d84',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d84;
$custom-light: #6a65a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d84",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 132
  },
  "hsl": {
    "h": 229.714,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.34576,
    "c": 0.14682,
    "h": 268.3
  },
  "luminance": 0.03776
}

Semantic roles & 50–950 ramp

primary

#1B2D84

secondary

#B7A343

accent

#CC3FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080510

muted

#7A7A7F

Preview Lab

Preview with #1B2D84

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

Preview Lab → · Contrast checker → · Palette generator →