#1B2D80#1B2D80

#1B2D80 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.2% C 0.141 H 268.2°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D80
RGB	rgb(27, 45, 128)
HSL	hsl(229, 65%, 30%)
HSV	hsv(229, 79%, 50%)
CMYK	cmyk(78.9%, 64.8%, 0%, 49.8%)
CIE-LAB	lab(22.54, 24.72, -48.82)
CIE-LCH	lch(22.54, 54.72, 296.85°)
OKLab	oklab(34.19% -0.0043 -0.1412)
OKLCH	oklch(34.19% 0.141 268.2)
XYZ	xyz(5.2853, 3.6677, 20.8473)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D80 #806E1B

analogous

#1B5F80 #1B2D80 #3B1B80

triadic

#1B2D80 #801B2D #2D801B

tetradic

#1B2D80 #801B5F #806E1B #1B803B

square

#1B2D80 #801B5F #806E1B #1B803B

split-complementary

#1B2D80 #803B1B #5F801B

monochromatic

#06091B #101B4D #1B2D80 #263FB3 #3F5AD6

Accessibility & contrast

On white

12.11

#1B2D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B2D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D80

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D80	#FFFFFF	#000000	##FFFFFF
##1B2D80	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B83

Deuteranopia (green-blind)

#00317E

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2d80;
/* rgb */ color: rgb(27, 45, 128);
/* oklch */ color: oklch(34.2% 0.141 268.2);

Tailwind

colors: {
  custom: {
    50: '#6965a6',
    500: '#1b2d80',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d80;
$custom-light: #6965a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d80",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 128
  },
  "hsl": {
    "h": 229.307,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.34186,
    "c": 0.14124,
    "h": 268.2
  },
  "luminance": 0.03668
}

Semantic roles & 50–950 ramp

primary

#1B2D80

secondary

#B4A043

accent

#CA40E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1B2D80

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

Preview Lab → · Contrast checker → · Palette generator →