#1B2D8D#1B2D8D

#1B2D8D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.5% C 0.159 H 268.2°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D8D
RGB	rgb(27, 45, 141)
HSL	hsl(231, 68%, 33%)
HSV	hsv(231, 81%, 55%)
CMYK	cmyk(80.9%, 68.1%, 0%, 44.7%)
CIE-LAB	lab(23.78, 29.78, -54.93)
CIE-LCH	lch(23.78, 62.48, 298.46°)
OKLab	oklab(35.47% -0.0049 -0.159)
OKLCH	oklch(35.47% 0.159 268.2)
XYZ	xyz(6.1964, 4.0322, 25.6458)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D8D #8D7B1B

analogous

#1B668D #1B2D8D #421B8D

triadic

#1B2D8D #8D1B2D #2D8D1B

tetradic

#1B2D8D #8D1B66 #8D7B1B #1B8D42

square

#1B2D8D #8D1B66 #8D7B1B #1B8D42

split-complementary

#1B2D8D #8D421B #668D1B

monochromatic

#070C26 #111D5A #1B2D8D #253DC0 #475EDC

Accessibility & contrast

On white

11.62

#1B2D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1B2D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D8D

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D8D	#FFFFFF	#000000	##FFFFFF
##1B2D8D	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E90

Deuteranopia (green-blind)

#00338B

Tritanopia (blue-blind)

#004759

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b2d8d;
/* rgb */ color: rgb(27, 45, 141);
/* oklch */ color: oklch(35.5% 0.159 268.2);

Tailwind

colors: {
  custom: {
    50: '#6c66af',
    500: '#1b2d8d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d8d;
$custom-light: #6c66af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d8d",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 141
  },
  "hsl": {
    "h": 230.526,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35473,
    "c": 0.15912,
    "h": 268.2
  },
  "luminance": 0.04033
}

Semantic roles & 50–950 ramp

primary

#1B2D8D

secondary

#BDAB46

accent

#CF3DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B2D8D

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

Preview Lab → · Contrast checker → · Palette generator →