#1B336D#1B336D

#1B336D is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.8% C 0.105 H 264.5°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B336D
RGB	rgb(27, 51, 109)
HSL	hsl(222, 60%, 27%)
HSV	hsv(222, 75%, 43%)
CMYK	cmyk(75.2%, 53.2%, 0%, 57.3%)
CIE-LAB	lab(22.67, 12.79, -36.50)
CIE-LCH	lch(22.67, 38.68, 289.31°)
OKLab	oklab(33.78% -0.0101 -0.1049)
OKLCH	oklch(33.78% 0.105 264.5)
XYZ	xyz(4.3952, 3.7043, 14.9484)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B336D #6D551B

analogous

#1B5C6D #1B336D #2C1B6D

triadic

#1B336D #6D1B33 #336D1B

tetradic

#1B336D #6D1B5C #6D551B #1B6D2C

square

#1B336D #6D1B5C #6D551B #1B6D2C

split-complementary

#1B336D #6D2C1B #5C6D1B

monochromatic

#060B19 #0F1C3C #1B336D #274A9E #3562CD

Accessibility & contrast

On white

12.06

#1B336D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1B336D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B336D

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B336D	#FFFFFF	#000000	##FFFFFF
##1B336D	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#103A6F

Deuteranopia (green-blind)

#00336C

Tritanopia (blue-blind)

#00414A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b336d;
/* rgb */ color: rgb(27, 51, 109);
/* oklch */ color: oklch(33.8% 0.105 264.5);

Tailwind

colors: {
  custom: {
    50: '#636a97',
    500: '#1b336d',
    950: '#000000',
  },
}

SCSS

$custom: #1b336d;
$custom-light: #636a97;
$custom-dark: #000000;

JSON

{
  "hex": "#1b336d",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 109
  },
  "hsl": {
    "h": 222.439,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.33784,
    "c": 0.10537,
    "h": 264.5
  },
  "luminance": 0.03705
}

Semantic roles & 50–950 ramp

primary

#1B336D

secondary

#A28642

accent

#B544E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1B336D

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

Preview Lab → · Contrast checker → · Palette generator →