#1B2D73#1B2D73

#1B2D73 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.0% C 0.123 H 268.0°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D73
RGB	rgb(27, 45, 115)
HSL	hsl(228, 62%, 28%)
HSV	hsv(228, 77%, 45%)
CMYK	cmyk(76.5%, 60.9%, 0%, 54.9%)
CIE-LAB	lab(21.38, 19.53, -42.44)
CIE-LCH	lch(21.38, 46.72, 294.71°)
OKLab	oklab(32.97% -0.0043 -0.1225)
OKLCH	oklch(32.97% 0.123 268)
XYZ	xyz(4.4838, 3.3471, 16.6261)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D73 #73611B

analogous

#1B5973 #1B2D73 #351B73

triadic

#1B2D73 #731B2D #2D731B

tetradic

#1B2D73 #731B59 #73611B #1B7335

square

#1B2D73 #731B59 #73611B #1B7335

split-complementary

#1B2D73 #73351B #59731B

monochromatic

#060A19 #0F1A41 #1B2D73 #2740A5 #3857D0

Accessibility & contrast

On white

12.58

#1B2D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B2D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D73

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D73	#FFFFFF	#000000	##FFFFFF
##1B2D73	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003875

Deuteranopia (green-blind)

#002F72

Tritanopia (blue-blind)

#003E4B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2d73;
/* rgb */ color: rgb(27, 45, 115);
/* oklch */ color: oklch(33.0% 0.123 268.0);

Tailwind

colors: {
  custom: {
    50: '#65659c',
    500: '#1b2d73',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d73;
$custom-light: #65659c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d73",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 115
  },
  "hsl": {
    "h": 227.727,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.32967,
    "c": 0.12254,
    "h": 268
  },
  "luminance": 0.03348
}

Semantic roles & 50–950 ramp

primary

#1B2D73

secondary

#A89342

accent

#C443E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2D73

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

Preview Lab → · Contrast checker → · Palette generator →