#1B2A5F#1B2A5F

#1B2A5F is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.6% C 0.096 H 268.3°. Best body text is #FFFFFF at 13.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A5F
RGB	rgb(27, 42, 95)
HSL	hsl(227, 56%, 24%)
HSV	hsv(227, 72%, 37%)
CMYK	cmyk(71.6%, 55.8%, 0%, 62.7%)
CIE-LAB	lab(18.86, 13.58, -33.52)
CIE-LCH	lch(18.86, 36.17, 292.05°)
OKLab	oklab(30.56% -0.0028 -0.0963)
OKLCH	oklch(30.56% 0.096 268.3)
XYZ	xyz(3.3448, 2.7148, 11.1720)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A5F #5F501B

analogous

#1B4C5F #1B2A5F #2E1B5F

triadic

#1B2A5F #5F1B2A #2A5F1B

tetradic

#1B2A5F #5F1B4C #5F501B #1B5F2E

square

#1B2A5F #5F1B4C #5F501B #1B5F2E

split-complementary

#1B2A5F #5F2E1B #4C5F1B

monochromatic

#070B18 #0D152F #1B2A5F #293F8F #3654BE

Accessibility & contrast

On white

13.61

#1B2A5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B2A5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A5F

13.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A5F	#FFFFFF	#000000	##FFFFFF
##1B2A5F	1.00	13.61	1.54	13.61
#FFFFFF	13.61	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093161

Deuteranopia (green-blind)

#002B5E

Tritanopia (blue-blind)

#003740

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2a5f;
/* rgb */ color: rgb(27, 42, 95);
/* oklch */ color: oklch(30.6% 0.096 268.3);

Tailwind

colors: {
  custom: {
    50: '#61638d',
    500: '#1b2a5f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a5f;
$custom-light: #61638d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a5f",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 95
  },
  "hsl": {
    "h": 226.765,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.30556,
    "c": 0.0963,
    "h": 268.3
  },
  "luminance": 0.02715
}

Semantic roles & 50–950 ramp

primary

#1B2A5F

secondary

#958241

accent

#BE49DF

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050C

muted

#7A797D

Preview Lab

Preview with #1B2A5F

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

Preview Lab → · Contrast checker → · Palette generator →