#1B2C5D#1B2C5D

#1B2C5D is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.9% C 0.090 H 266.7°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C5D
RGB	rgb(27, 44, 93)
HSL	hsl(225, 55%, 24%)
HSV	hsv(225, 71%, 36%)
CMYK	cmyk(71%, 52.7%, 0%, 63.5%)
CIE-LAB	lab(19.33, 11.30, -31.45)
CIE-LCH	lch(19.33, 33.42, 289.77°)
OKLab	oklab(30.86% -0.0052 -0.0901)
OKLCH	oklch(30.86% 0.09 266.7)
XYZ	xyz(3.3278, 2.8244, 10.7236)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C5D #5D4C1B

analogous

#1B4D5D #1B2C5D #2B1B5D

triadic

#1B2C5D #5D1B2C #2C5D1B

tetradic

#1B2C5D #5D1B4D #5D4C1B #1B5D2B

square

#1B2C5D #5D1B4D #5D4C1B #1B5D2B

split-complementary

#1B2C5D #5D2B1B #4D5D1B

monochromatic

#070B18 #0D162E #1B2C5D #29428C #3759BC

Accessibility & contrast

On white

13.42

#1B2C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B2C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C5D

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C5D	#FFFFFF	#000000	##FFFFFF
##1B2C5D	1.00	13.42	1.57	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11325F

Deuteranopia (green-blind)

#022C5C

Tritanopia (blue-blind)

#003740

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2c5d;
/* rgb */ color: rgb(27, 44, 93);
/* oklch */ color: oklch(30.9% 0.090 266.7);

Tailwind

colors: {
  custom: {
    50: '#60648b',
    500: '#1b2c5d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c5d;
$custom-light: #60648b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c5d",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 93
  },
  "hsl": {
    "h": 224.545,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.30859,
    "c": 0.0903,
    "h": 266.7
  },
  "luminance": 0.02825
}

Semantic roles & 50–950 ramp

primary

#1B2C5D

secondary

#937E41

accent

#B849DE

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #1B2C5D

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

Preview Lab → · Contrast checker → · Palette generator →