#1B286D#1B286D

#1B286D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.4% C 0.120 H 269.8°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B286D
RGB	rgb(27, 40, 109)
HSL	hsl(230, 60%, 27%)
HSV	hsv(230, 75%, 43%)
CMYK	cmyk(75.2%, 63.3%, 0%, 57.3%)
CIE-LAB	lab(19.45, 20.68, -41.73)
CIE-LCH	lch(19.45, 46.57, 296.36°)
OKLab	oklab(31.36% -0.0004 -0.1204)
OKLCH	oklch(31.36% 0.12 269.8)
XYZ	xyz(3.9702, 2.8543, 14.8067)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B286D #6D601B

analogous

#1B516D #1B286D #371B6D

triadic

#1B286D #6D1B28 #286D1B

tetradic

#1B286D #6D1B51 #6D601B #1B6D37

square

#1B286D #6D1B51 #6D601B #1B6D37

split-complementary

#1B286D #6D371B #516D1B

monochromatic

#060919 #0F163C #1B286D #273A9E #354DCD

Accessibility & contrast

On white

13.37

#1B286D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B286D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B286D

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B286D	#FFFFFF	#000000	##FFFFFF
##1B286D	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336F

Deuteranopia (green-blind)

#002B6C

Tritanopia (blue-blind)

#003946

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b286d;
/* rgb */ color: rgb(27, 40, 109);
/* oklch */ color: oklch(31.4% 0.120 269.8);

Tailwind

colors: {
  custom: {
    50: '#646197',
    500: '#1b286d',
    950: '#000000',
  },
}

SCSS

$custom: #1b286d;
$custom-light: #646197;
$custom-dark: #000000;

JSON

{
  "hex": "#1b286d",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 109
  },
  "hsl": {
    "h": 230.488,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.31364,
    "c": 0.12042,
    "h": 269.8
  },
  "luminance": 0.02855
}

Semantic roles & 50–950 ramp

primary

#1B286D

secondary

#A29342

accent

#CA44E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1B286D

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

Preview Lab → · Contrast checker → · Palette generator →