#1B2D79#1B2D79

#1B2D79 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.5% C 0.131 H 268.1°. Best body text is #FFFFFF at 12.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D79
RGB	rgb(27, 45, 121)
HSL	hsl(229, 64%, 29%)
HSV	hsv(229, 78%, 47%)
CMYK	cmyk(77.7%, 62.8%, 0%, 52.5%)
CIE-LAB	lab(21.91, 21.94, -45.42)
CIE-LCH	lch(21.91, 50.44, 295.78°)
OKLab	oklab(33.52% -0.0043 -0.1312)
OKLCH	oklch(33.52% 0.131 268.1)
XYZ	xyz(4.8404, 3.4897, 18.5039)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D79 #79671B

analogous

#1B5C79 #1B2D79 #381B79

triadic

#1B2D79 #791B2D #2D791B

tetradic

#1B2D79 #791B5C #79671B #1B7938

square

#1B2D79 #791B5C #79671B #1B7938

split-complementary

#1B2D79 #79381B #5C791B

monochromatic

#060919 #101A47 #1B2D79 #2640AB #3B58D3

Accessibility & contrast

On white

12.37

#1B2D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B2D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D79

12.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D79	#FFFFFF	#000000	##FFFFFF
##1B2D79	1.00	12.37	1.70	12.37
#FFFFFF	12.37	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397C

Deuteranopia (green-blind)

#003078

Tritanopia (blue-blind)

#00404E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2d79;
/* rgb */ color: rgb(27, 45, 121);
/* oklch */ color: oklch(33.5% 0.131 268.1);

Tailwind

colors: {
  custom: {
    50: '#6765a0',
    500: '#1b2d79',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d79;
$custom-light: #6765a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d79",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 121
  },
  "hsl": {
    "h": 228.511,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.33521,
    "c": 0.13127,
    "h": 268.1
  },
  "luminance": 0.0349
}

Semantic roles & 50–950 ramp

primary

#1B2D79

secondary

#AD9943

accent

#C741E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050F

muted

#7A7A7E

Preview Lab

Preview with #1B2D79

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

Preview Lab → · Contrast checker → · Palette generator →