#1B2B5E#1B2B5E

#1B2B5E is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.7% C 0.093 H 267.5°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B5E
RGB	rgb(27, 43, 94)
HSL	hsl(226, 55%, 24%)
HSV	hsv(226, 71%, 37%)
CMYK	cmyk(71.3%, 54.3%, 0%, 63.1%)
CIE-LAB	lab(19.09, 12.44, -32.49)
CIE-LCH	lch(19.09, 34.79, 290.95°)
OKLab	oklab(30.71% -0.004 -0.0932)
OKLCH	oklch(30.71% 0.093 267.5)
XYZ	xyz(3.3356, 2.7686, 10.9461)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B5E #5E4E1B

analogous

#1B4C5E #1B2B5E #2C1B5E

triadic

#1B2B5E #5E1B2B #2B5E1B

tetradic

#1B2B5E #5E1B4C #5E4E1B #1B5E2C

square

#1B2B5E #5E1B4C #5E4E1B #1B5E2C

split-complementary

#1B2B5E #5E2C1B #4C5E1B

monochromatic

#070B18 #0D152E #1B2B5E #29418E #3656BD

Accessibility & contrast

On white

13.52

#1B2B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B2B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B5E

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B5E	#FFFFFF	#000000	##FFFFFF
##1B2B5E	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D3260

Deuteranopia (green-blind)

#002B5D

Tritanopia (blue-blind)

#003740

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2b5e;
/* rgb */ color: rgb(27, 43, 94);
/* oklch */ color: oklch(30.7% 0.093 267.5);

Tailwind

colors: {
  custom: {
    50: '#60638c',
    500: '#1b2b5e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b5e;
$custom-light: #60638c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b5e",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 94
  },
  "hsl": {
    "h": 225.672,
    "s": 55.372,
    "l": 23.725
  },
  "oklch": {
    "l": 0.30705,
    "c": 0.09331,
    "h": 267.5
  },
  "luminance": 0.02769
}

Semantic roles & 50–950 ramp

primary

#1B2B5E

secondary

#948041

accent

#BB49DF

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #1B2B5E

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

Preview Lab → · Contrast checker → · Palette generator →