#1B2A5E#1B2A5E

#1B2A5E is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.5% C 0.095 H 268.2°. Best body text is #FFFFFF at 13.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A5E
RGB	rgb(27, 42, 94)
HSL	hsl(227, 55%, 24%)
HSV	hsv(227, 71%, 37%)
CMYK	cmyk(71.3%, 55.3%, 0%, 63.1%)
CIE-LAB	lab(18.79, 13.17, -32.99)
CIE-LCH	lch(18.79, 35.52, 291.76°)
OKLab	oklab(30.47% -0.0029 -0.0947)
OKLCH	oklch(30.47% 0.095 268.2)
XYZ	xyz(3.2996, 2.6968, 10.9341)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A5E #5E4F1B

analogous

#1B4B5E #1B2A5E #2D1B5E

triadic

#1B2A5E #5E1B2A #2A5E1B

tetradic

#1B2A5E #5E1B4B #5E4F1B #1B5E2D

square

#1B2A5E #5E1B4B #5E4F1B #1B5E2D

split-complementary

#1B2A5E #5E2D1B #4B5E1B

monochromatic

#070B18 #0D152E #1B2A5E #293F8E #3654BD

Accessibility & contrast

On white

13.64

#1B2A5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B2A5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A5E

13.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A5E	#FFFFFF	#000000	##FFFFFF
##1B2A5E	1.00	13.64	1.54	13.64
#FFFFFF	13.64	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3160

Deuteranopia (green-blind)

#002B5D

Tritanopia (blue-blind)

#00363F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2a5e;
/* rgb */ color: rgb(27, 42, 94);
/* oklch */ color: oklch(30.5% 0.095 268.2);

Tailwind

colors: {
  custom: {
    50: '#60638c',
    500: '#1b2a5e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a5e;
$custom-light: #60638c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a5e",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 94
  },
  "hsl": {
    "h": 226.567,
    "s": 55.372,
    "l": 23.725
  },
  "oklch": {
    "l": 0.30472,
    "c": 0.09474,
    "h": 268.2
  },
  "luminance": 0.02697
}

Semantic roles & 50–950 ramp

primary

#1B2A5E

secondary

#948141

accent

#BD49DF

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #1B2A5E

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

Preview Lab → · Contrast checker → · Palette generator →