#1B2D77#1B2D77

#1B2D77 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.3% C 0.128 H 268.1°. Best body text is #FFFFFF at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D77
RGB	rgb(27, 45, 119)
HSL	hsl(228, 63%, 29%)
HSV	hsv(228, 77%, 47%)
CMYK	cmyk(77.3%, 62.2%, 0%, 53.3%)
CIE-LAB	lab(21.73, 21.14, -44.44)
CIE-LCH	lch(21.73, 49.21, 295.44°)
OKLab	oklab(33.33% -0.0043 -0.1283)
OKLCH	oklch(33.33% 0.128 268.1)
XYZ	xyz(4.7190, 3.4412, 17.8647)
Luminance	0.0344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D77 #77651B

analogous

#1B5B77 #1B2D77 #371B77

triadic

#1B2D77 #771B2D #2D771B

tetradic

#1B2D77 #771B5B #77651B #1B7737

square

#1B2D77 #771B5B #77651B #1B7737

split-complementary

#1B2D77 #77371B #5B771B

monochromatic

#060919 #101A45 #1B2D77 #2640A9 #3A58D2

Accessibility & contrast

On white

12.44

#1B2D77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B2D77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D77

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D77	#FFFFFF	#000000	##FFFFFF
##1B2D77	1.00	12.44	1.69	12.44
#FFFFFF	12.44	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003879

Deuteranopia (green-blind)

#003076

Tritanopia (blue-blind)

#00404D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2d77;
/* rgb */ color: rgb(27, 45, 119);
/* oklch */ color: oklch(33.3% 0.128 268.1);

Tailwind

colors: {
  custom: {
    50: '#66659f',
    500: '#1b2d77',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d77;
$custom-light: #66659f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d77",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 119
  },
  "hsl": {
    "h": 228.261,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.33334,
    "c": 0.12838,
    "h": 268.1
  },
  "luminance": 0.03442
}

Semantic roles & 50–950 ramp

primary

#1B2D77

secondary

#AB9742

accent

#C642E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #1B2D77

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

Preview Lab → · Contrast checker → · Palette generator →