#1B286F#1B286F

#1B286F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.6% C 0.123 H 269.8°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#1B286F
RGB	rgb(27, 40, 111)
HSL	hsl(231, 61%, 27%)
HSV	hsv(231, 76%, 44%)
CMYK	cmyk(75.7%, 64%, 0%, 56.5%)
CIE-LAB	lab(19.63, 21.48, -42.73)
CIE-LCH	lch(19.63, 47.82, 296.69°)
OKLab	oklab(31.55% -0.0004 -0.1234)
OKLCH	oklch(31.55% 0.123 269.8)
XYZ	xyz(4.0790, 2.8979, 15.3802)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B286F #6F621B

analogous

#1B526F #1B286F #381B6F

triadic

#1B286F #6F1B28 #286F1B

tetradic

#1B286F #6F1B52 #6F621B #1B6F38

square

#1B286F #6F1B52 #6F621B #1B6F38

split-complementary

#1B286F #6F381B #526F1B

monochromatic

#060919 #0F163E #1B286F #273AA0 #364ECE

Accessibility & contrast

On white

13.29

#1B286F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1B286F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B286F

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B286F	#FFFFFF	#000000	##FFFFFF
##1B286F	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003371

Deuteranopia (green-blind)

#002C6E

Tritanopia (blue-blind)

#003A47

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b286f;
/* rgb */ color: rgb(27, 40, 111);
/* oklch */ color: oklch(31.6% 0.123 269.8);

Tailwind

colors: {
  custom: {
    50: '#656199',
    500: '#1b286f',
    950: '#000000',
  },
}

SCSS

$custom: #1b286f;
$custom-light: #656199;
$custom-dark: #000000;

JSON

{
  "hex": "#1b286f",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 111
  },
  "hsl": {
    "h": 230.714,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.31553,
    "c": 0.12336,
    "h": 269.8
  },
  "luminance": 0.02898
}

Semantic roles & 50–950 ramp

primary

#1B286F

secondary

#A49542

accent

#CB44E4

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1B286F

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

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