#1B336A#1B336A

#1B336A is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.5% C 0.101 H 264.0°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B336A
RGB	rgb(27, 51, 106)
HSL	hsl(222, 59%, 26%)
HSV	hsv(222, 75%, 42%)
CMYK	cmyk(74.5%, 51.9%, 0%, 58.4%)
CIE-LAB	lab(22.45, 11.56, -34.93)
CIE-LCH	lch(22.45, 36.79, 288.31°)
OKLab	oklab(33.54% -0.0105 -0.1002)
OKLCH	oklch(33.54% 0.101 264)
XYZ	xyz(4.2364, 3.6408, 14.1124)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B336A #6A521B

analogous

#1B5A6A #1B336A #2A1B6A

triadic

#1B336A #6A1B33 #336A1B

tetradic

#1B336A #6A1B5A #6A521B #1B6A2A

square

#1B336A #6A1B5A #6A521B #1B6A2A

split-complementary

#1B336A #6A2A1B #5A6A1B

monochromatic

#060C18 #0F1C39 #1B336A #274A9B #3462CB

Accessibility & contrast

On white

12.15

#1B336A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B336A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B336A

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B336A	#FFFFFF	#000000	##FFFFFF
##1B336A	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14396C

Deuteranopia (green-blind)

#003269

Tritanopia (blue-blind)

#004049

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b336a;
/* rgb */ color: rgb(27, 51, 106);
/* oklch */ color: oklch(33.5% 0.101 264.0);

Tailwind

colors: {
  custom: {
    50: '#636a95',
    500: '#1b336a',
    950: '#000000',
  },
}

SCSS

$custom: #1b336a;
$custom-light: #636a95;
$custom-dark: #000000;

JSON

{
  "hex": "#1b336a",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 106
  },
  "hsl": {
    "h": 221.772,
    "s": 59.398,
    "l": 26.078
  },
  "oklch": {
    "l": 0.33544,
    "c": 0.10079,
    "h": 264
  },
  "luminance": 0.03641
}

Semantic roles & 50–950 ramp

primary

#1B336A

secondary

#9F8342

accent

#B345E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1B336A

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

Preview Lab → · Contrast checker → · Palette generator →