#1B286B#1B286B

#1B286B is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.2% C 0.117 H 269.8°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B286B
RGB	rgb(27, 40, 107)
HSL	hsl(230, 60%, 26%)
HSV	hsv(230, 75%, 42%)
CMYK	cmyk(74.8%, 62.6%, 0%, 58%)
CIE-LAB	lab(19.27, 19.88, -40.72)
CIE-LCH	lch(19.27, 45.31, 296.02°)
OKLab	oklab(31.18% -0.0004 -0.1174)
OKLCH	oklch(31.18% 0.117 269.8)
XYZ	xyz(3.8637, 2.8117, 14.2462)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B286B #6B5E1B

analogous

#1B506B #1B286B #361B6B

triadic

#1B286B #6B1B28 #286B1B

tetradic

#1B286B #6B1B50 #6B5E1B #1B6B36

square

#1B286B #6B1B50 #6B5E1B #1B6B36

split-complementary

#1B286B #6B361B #506B1B

monochromatic

#060918 #0F163A #1B286B #273A9C #354DCC

Accessibility & contrast

On white

13.44

#1B286B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B286B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B286B

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B286B	#FFFFFF	#000000	##FFFFFF
##1B286B	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336D

Deuteranopia (green-blind)

#002B6A

Tritanopia (blue-blind)

#003945

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b286b;
/* rgb */ color: rgb(27, 40, 107);
/* oklch */ color: oklch(31.2% 0.117 269.8);

Tailwind

colors: {
  custom: {
    50: '#646196',
    500: '#1b286b',
    950: '#000000',
  },
}

SCSS

$custom: #1b286b;
$custom-light: #646196;
$custom-dark: #000000;

JSON

{
  "hex": "#1b286b",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 107
  },
  "hsl": {
    "h": 230.25,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.31177,
    "c": 0.11745,
    "h": 269.8
  },
  "luminance": 0.02812
}

Semantic roles & 50–950 ramp

primary

#1B286B

secondary

#A09142

accent

#C945E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1B286B

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

Preview Lab → · Contrast checker → · Palette generator →