#1B286E#1B286E

#1B286E is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.5% C 0.122 H 269.8°. Best body text is #FFFFFF at 13.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B286E
RGB	rgb(27, 40, 110)
HSL	hsl(231, 61%, 27%)
HSV	hsv(231, 75%, 43%)
CMYK	cmyk(75.5%, 63.6%, 0%, 56.9%)
CIE-LAB	lab(19.54, 21.08, -42.23)
CIE-LCH	lch(19.54, 47.20, 296.53°)
OKLab	oklab(31.46% -0.0004 -0.1219)
OKLCH	oklch(31.46% 0.122 269.8)
XYZ	xyz(4.0243, 2.8760, 15.0919)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B286E #6E611B

analogous

#1B526E #1B286E #371B6E

triadic

#1B286E #6E1B28 #286E1B

tetradic

#1B286E #6E1B52 #6E611B #1B6E37

square

#1B286E #6E1B52 #6E611B #1B6E37

split-complementary

#1B286E #6E371B #526E1B

monochromatic

#060919 #0F163D #1B286E #273A9F #364ECE

Accessibility & contrast

On white

13.33

#1B286E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1B286E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B286E

13.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B286E	#FFFFFF	#000000	##FFFFFF
##1B286E	1.00	13.33	1.58	13.33
#FFFFFF	13.33	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003370

Deuteranopia (green-blind)

#002C6D

Tritanopia (blue-blind)

#003A46

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b286e;
/* rgb */ color: rgb(27, 40, 110);
/* oklch */ color: oklch(31.5% 0.122 269.8);

Tailwind

colors: {
  custom: {
    50: '#656198',
    500: '#1b286e',
    950: '#000000',
  },
}

SCSS

$custom: #1b286e;
$custom-light: #656198;
$custom-dark: #000000;

JSON

{
  "hex": "#1b286e",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 110
  },
  "hsl": {
    "h": 230.602,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.31458,
    "c": 0.12189,
    "h": 269.8
  },
  "luminance": 0.02876
}

Semantic roles & 50–950 ramp

primary

#1B286E

secondary

#A39442

accent

#CB44E4

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1B286E

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

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