#1B2D5F#1B2D5F

#1B2D5F is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.3% C 0.092 H 266.3°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D5F
RGB	rgb(27, 45, 95)
HSL	hsl(224, 56%, 24%)
HSV	hsv(224, 72%, 37%)
CMYK	cmyk(71.6%, 52.6%, 0%, 62.7%)
CIE-LAB	lab(19.78, 11.39, -32.04)
CIE-LCH	lch(19.78, 34.00, 289.57°)
OKLab	oklab(31.26% -0.006 -0.0918)
OKLCH	oklch(31.26% 0.092 266.3)
XYZ	xyz(3.4552, 2.9357, 11.2088)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D5F #5F4D1B

analogous

#1B4F5F #1B2D5F #2B1B5F

triadic

#1B2D5F #5F1B2D #2D5F1B

tetradic

#1B2D5F #5F1B4F #5F4D1B #1B5F2B

square

#1B2D5F #5F1B4F #5F4D1B #1B5F2B

split-complementary

#1B2D5F #5F2B1B #4F5F1B

monochromatic

#070B18 #0D162F #1B2D5F #29448F #365ABE

Accessibility & contrast

On white

13.23

#1B2D5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1B2D5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D5F

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D5F	#FFFFFF	#000000	##FFFFFF
##1B2D5F	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#123361

Deuteranopia (green-blind)

#022D5E

Tritanopia (blue-blind)

#003941

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b2d5f;
/* rgb */ color: rgb(27, 45, 95);
/* oklch */ color: oklch(31.3% 0.092 266.3);

Tailwind

colors: {
  custom: {
    50: '#60658d',
    500: '#1b2d5f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d5f;
$custom-light: #60658d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d5f",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 95
  },
  "hsl": {
    "h": 224.118,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.31255,
    "c": 0.09203,
    "h": 266.3
  },
  "luminance": 0.02936
}

Semantic roles & 50–950 ramp

primary

#1B2D5F

secondary

#957F41

accent

#B749DF

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #1B2D5F

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

Preview Lab → · Contrast checker → · Palette generator →