#1F286B#1F286B

#1F286B is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.4% C 0.116 H 272.1°. Best body text is #FFFFFF at 13.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F286B
RGB	rgb(31, 40, 107)
HSL	hsl(233, 55%, 27%)
HSV	hsv(233, 71%, 42%)
CMYK	cmyk(71%, 62.6%, 0%, 58%)
CIE-LAB	lab(19.52, 20.49, -40.31)
CIE-LCH	lch(19.52, 45.22, 296.95°)
OKLab	oklab(31.42% 0.0042 -0.1162)
OKLCH	oklch(31.42% 0.116 272.1)
XYZ	xyz(3.9768, 2.8701, 14.2515)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F286B #6B621F

analogous

#1F4E6B #1F286B #3C1F6B

triadic

#1F286B #6B1F28 #286B1F

tetradic

#1F286B #6B1F4E #6B621F #1F6B3C

square

#1F286B #6B1F4E #6B621F #1F6B3C

split-complementary

#1F286B #6B3C1F #4E6B1F

monochromatic

#070918 #11163C #1F286B #2D3A9A #3D4EC7

Accessibility & contrast

On white

13.34

#1F286B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1F286B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F286B

13.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F286B	#FFFFFF	#000000	##FFFFFF
##1F286B	1.00	13.34	1.57	13.34
#FFFFFF	13.34	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336D

Deuteranopia (green-blind)

#002C6A

Tritanopia (blue-blind)

#003945

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f286b;
/* rgb */ color: rgb(31, 40, 107);
/* oklch */ color: oklch(31.4% 0.116 272.1);

Tailwind

colors: {
  custom: {
    50: '#656196',
    500: '#1f286b',
    950: '#000000',
  },
}

SCSS

$custom: #1f286b;
$custom-light: #656196;
$custom-dark: #000000;

JSON

{
  "hex": "#1f286b",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 107
  },
  "hsl": {
    "h": 232.895,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.31422,
    "c": 0.11623,
    "h": 272.1
  },
  "luminance": 0.0287
}

Semantic roles & 50–950 ramp

primary

#1F286B

secondary

#9F9547

accent

#CD49DE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1F286B

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

Preview Lab → · Contrast checker → · Palette generator →