#1B3261#1B3261

#1B3261 is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.6% C 0.088 H 262.8°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B3261
RGB	rgb(27, 50, 97)
HSL	hsl(220, 56%, 24%)
HSV	hsv(220, 72%, 38%)
CMYK	cmyk(72.2%, 48.5%, 0%, 62%)
CIE-LAB	lab(21.49, 8.60, -30.60)
CIE-LCH	lch(21.49, 31.79, 285.69°)
OKLab	oklab(32.61% -0.011 -0.0875)
OKLCH	oklch(32.61% 0.088 262.8)
XYZ	xyz(3.7495, 3.3769, 11.7612)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3261 #614A1B

analogous

#1B5561 #1B3261 #271B61

triadic

#1B3261 #611B32 #32611B

tetradic

#1B3261 #611B55 #614A1B #1B6127

square

#1B3261 #611B55 #614A1B #1B6127

split-complementary

#1B3261 #61271B #55611B

monochromatic

#070C18 #0E1931 #1B3261 #284B91 #3663C1

Accessibility & contrast

On white

12.53

#1B3261 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B3261 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3261

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3261	#FFFFFF	#000000	##FFFFFF
##1B3261	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3763

Deuteranopia (green-blind)

#0E3160

Tritanopia (blue-blind)

#003D44

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b3261;
/* rgb */ color: rgb(27, 50, 97);
/* oklch */ color: oklch(32.6% 0.088 262.8);

Tailwind

colors: {
  custom: {
    50: '#61698e',
    500: '#1b3261',
    950: '#000000',
  },
}

SCSS

$custom: #1b3261;
$custom-light: #61698e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3261",
  "rgb": {
    "r": 27,
    "g": 50,
    "b": 97
  },
  "hsl": {
    "h": 220.286,
    "s": 56.452,
    "l": 24.314
  },
  "oklch": {
    "l": 0.32609,
    "c": 0.08823,
    "h": 262.8
  },
  "luminance": 0.03377
}

Semantic roles & 50–950 ramp

primary

#1B3261

secondary

#977B41

accent

#AE48E0

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05060C

muted

#7A7A7D

Preview Lab

Preview with #1B3261

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

Preview Lab → · Contrast checker → · Palette generator →