#1B335F#1B335F

#1B335F is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.7% C 0.084 H 261.4°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B335F
RGB	rgb(27, 51, 95)
HSL	hsl(219, 56%, 24%)
HSV	hsv(219, 72%, 37%)
CMYK	cmyk(71.6%, 46.3%, 0%, 62.7%)
CIE-LAB	lab(21.68, 7.07, -29.00)
CIE-LCH	lch(21.68, 29.85, 283.69°)
OKLab	oklab(32.71% -0.0125 -0.0828)
OKLCH	oklch(32.71% 0.084 261.4)
XYZ	xyz(3.7006, 3.4265, 11.2906)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B335F #5F471B

analogous

#1B555F #1B335F #251B5F

triadic

#1B335F #5F1B33 #335F1B

tetradic

#1B335F #5F1B55 #5F471B #1B5F25

square

#1B335F #5F1B55 #5F471B #1B5F25

split-complementary

#1B335F #5F251B #555F1B

monochromatic

#070D18 #0D192F #1B335F #294D8F #3666BE

Accessibility & contrast

On white

12.46

#1B335F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B335F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B335F

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B335F	#FFFFFF	#000000	##FFFFFF
##1B335F	1.00	12.46	1.69	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3761

Deuteranopia (green-blind)

#13315E

Tritanopia (blue-blind)

#003D44

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b335f;
/* rgb */ color: rgb(27, 51, 95);
/* oklch */ color: oklch(32.7% 0.084 261.4);

Tailwind

colors: {
  custom: {
    50: '#606a8d',
    500: '#1b335f',
    950: '#000000',
  },
}

SCSS

$custom: #1b335f;
$custom-light: #606a8d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b335f",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 95
  },
  "hsl": {
    "h": 218.824,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.32706,
    "c": 0.08376,
    "h": 261.4
  },
  "luminance": 0.03427
}

Semantic roles & 50–950 ramp

primary

#1B335F

secondary

#957741

accent

#AA49DF

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #1B335F

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

Preview Lab → · Contrast checker → · Palette generator →