#1B286A#1B286A

#1B286A is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.1% C 0.116 H 269.8°. Best body text is #FFFFFF at 13.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B286A
RGB	rgb(27, 40, 106)
HSL	hsl(230, 59%, 26%)
HSV	hsv(230, 75%, 42%)
CMYK	cmyk(74.5%, 62.3%, 0%, 58.4%)
CIE-LAB	lab(19.19, 19.48, -40.21)
CIE-LCH	lch(19.19, 44.68, 295.85°)
OKLab	oklab(31.09% -0.0004 -0.116)
OKLCH	oklch(31.09% 0.116 269.8)
XYZ	xyz(3.8114, 2.7908, 13.9707)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B286A #6A5D1B

analogous

#1B4F6A #1B286A #351B6A

triadic

#1B286A #6A1B28 #286A1B

tetradic

#1B286A #6A1B4F #6A5D1B #1B6A35

square

#1B286A #6A1B4F #6A5D1B #1B6A35

split-complementary

#1B286A #6A351B #4F6A1B

monochromatic

#060918 #0F1639 #1B286A #273A9B #344DCB

Accessibility & contrast

On white

13.48

#1B286A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B286A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B286A

13.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B286A	#FFFFFF	#000000	##FFFFFF
##1B286A	1.00	13.48	1.56	13.48
#FFFFFF	13.48	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326C

Deuteranopia (green-blind)

#002B69

Tritanopia (blue-blind)

#003844

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b286a;
/* rgb */ color: rgb(27, 40, 106);
/* oklch */ color: oklch(31.1% 0.116 269.8);

Tailwind

colors: {
  custom: {
    50: '#636195',
    500: '#1b286a',
    950: '#000000',
  },
}

SCSS

$custom: #1b286a;
$custom-light: #636195;
$custom-dark: #000000;

JSON

{
  "hex": "#1b286a",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 106
  },
  "hsl": {
    "h": 230.127,
    "s": 59.398,
    "l": 26.078
  },
  "oklch": {
    "l": 0.31085,
    "c": 0.11596,
    "h": 269.8
  },
  "luminance": 0.02791
}

Semantic roles & 50–950 ramp

primary

#1B286A

secondary

#9F9042

accent

#C945E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1B286A

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

Preview Lab → · Contrast checker → · Palette generator →