#1B2D5D#1B2D5D

#1B2D5D is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.1% C 0.089 H 266.0°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D5D
RGB	rgb(27, 45, 93)
HSL	hsl(224, 55%, 24%)
HSV	hsv(224, 71%, 36%)
CMYK	cmyk(71%, 51.6%, 0%, 63.5%)
CIE-LAB	lab(19.64, 10.58, -30.95)
CIE-LCH	lch(19.64, 32.71, 288.86°)
OKLab	oklab(31.1% -0.0063 -0.0887)
OKLCH	oklch(31.1% 0.089 266)
XYZ	xyz(3.3655, 2.8998, 10.7362)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D5D #5D4B1B

analogous

#1B4E5D #1B2D5D #2A1B5D

triadic

#1B2D5D #5D1B2D #2D5D1B

tetradic

#1B2D5D #5D1B4E #5D4B1B #1B5D2A

square

#1B2D5D #5D1B4E #5D4B1B #1B5D2A

split-complementary

#1B2D5D #5D2A1B #4E5D1B

monochromatic

#070B18 #0D162E #1B2D5D #29448C #375BBC

Accessibility & contrast

On white

13.29

#1B2D5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1B2D5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D5D

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D5D	#FFFFFF	#000000	##FFFFFF
##1B2D5D	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14335F

Deuteranopia (green-blind)

#052D5C

Tritanopia (blue-blind)

#003840

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b2d5d;
/* rgb */ color: rgb(27, 45, 93);
/* oklch */ color: oklch(31.1% 0.089 266.0);

Tailwind

colors: {
  custom: {
    50: '#60658b',
    500: '#1b2d5d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d5d;
$custom-light: #60658b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d5d",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 93
  },
  "hsl": {
    "h": 223.636,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.31096,
    "c": 0.08887,
    "h": 266
  },
  "luminance": 0.029
}

Semantic roles & 50–950 ramp

primary

#1B2D5D

secondary

#937C41

accent

#B649DE

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #1B2D5D

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

Preview Lab → · Contrast checker → · Palette generator →