#1B2C7B#1B2C7B

#1B2C7B is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.5% C 0.135 H 268.5°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C7B
RGB	rgb(27, 44, 123)
HSL	hsl(229, 64%, 29%)
HSV	hsv(229, 78%, 48%)
CMYK	cmyk(78%, 64.2%, 0%, 51.8%)
CIE-LAB	lab(21.81, 23.44, -46.85)
CIE-LCH	lch(21.81, 52.38, 296.58°)
OKLab	oklab(33.51% -0.0036 -0.1354)
OKLCH	oklch(33.51% 0.135 268.5)
XYZ	xyz(4.9266, 3.4639, 19.1440)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C7B #7B6A1B

analogous

#1B5C7B #1B2C7B #3A1B7B

triadic

#1B2C7B #7B1B2C #2C7B1B

tetradic

#1B2C7B #7B1B5C #7B6A1B #1B7B3A

square

#1B2C7B #7B1B5C #7B6A1B #1B7B3A

split-complementary

#1B2C7B #7B3A1B #5C7B1B

monochromatic

#060919 #101A49 #1B2C7B #263EAD #3C57D4

Accessibility & contrast

On white

12.41

#1B2C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B2C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C7B

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C7B	#FFFFFF	#000000	##FFFFFF
##1B2C7B	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397E

Deuteranopia (green-blind)

#003079

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2c7b;
/* rgb */ color: rgb(27, 44, 123);
/* oklch */ color: oklch(33.5% 0.135 268.5);

Tailwind

colors: {
  custom: {
    50: '#6865a2',
    500: '#1b2c7b',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c7b;
$custom-light: #6865a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c7b",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 123
  },
  "hsl": {
    "h": 229.375,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.33507,
    "c": 0.13544,
    "h": 268.5
  },
  "luminance": 0.03464
}

Semantic roles & 50–950 ramp

primary

#1B2C7B

secondary

#AF9C43

accent

#CA41E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1B2C7B

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

Preview Lab → · Contrast checker → · Palette generator →