#1B336B#1B336B

#1B336B is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.6% C 0.102 H 264.2°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#1B336B
RGB	rgb(27, 51, 107)
HSL	hsl(222, 60%, 26%)
HSV	hsv(222, 75%, 42%)
CMYK	cmyk(74.8%, 52.3%, 0%, 58%)
CIE-LAB	lab(22.52, 11.97, -35.45)
CIE-LCH	lch(22.52, 37.42, 288.65°)
OKLab	oklab(33.62% -0.0104 -0.1018)
OKLCH	oklch(33.62% 0.102 264.2)
XYZ	xyz(4.2887, 3.6618, 14.3878)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B336B #6B531B

analogous

#1B5B6B #1B336B #2B1B6B

triadic

#1B336B #6B1B33 #336B1B

tetradic

#1B336B #6B1B5B #6B531B #1B6B2B

square

#1B336B #6B1B5B #6B531B #1B6B2B

split-complementary

#1B336B #6B2B1B #5B6B1B

monochromatic

#060C18 #0F1C3A #1B336B #274A9C #3562CC

Accessibility & contrast

On white

12.12

#1B336B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B336B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B336B

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B336B	#FFFFFF	#000000	##FFFFFF
##1B336B	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133A6D

Deuteranopia (green-blind)

#00326A

Tritanopia (blue-blind)

#00404A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b336b;
/* rgb */ color: rgb(27, 51, 107);
/* oklch */ color: oklch(33.6% 0.102 264.2);

Tailwind

colors: {
  custom: {
    50: '#636a96',
    500: '#1b336b',
    950: '#000000',
  },
}

SCSS

$custom: #1b336b;
$custom-light: #636a96;
$custom-dark: #000000;

JSON

{
  "hex": "#1b336b",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 107
  },
  "hsl": {
    "h": 222,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.33624,
    "c": 0.10233,
    "h": 264.2
  },
  "luminance": 0.03662
}

Semantic roles & 50–950 ramp

primary

#1B336B

secondary

#A08442

accent

#B345E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1B336B

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

Preview Lab → · Contrast checker → · Palette generator →