#1B2390#1B2390

#1B2390 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.1% C 0.174 H 269.8°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#1B2390
RGB	rgb(27, 35, 144)
HSL	hsl(236, 68%, 34%)
HSV	hsv(236, 81%, 56%)
CMYK	cmyk(81.3%, 75.7%, 0%, 43.5%)
CIE-LAB	lab(21.76, 37.29, -60.13)
CIE-LCH	lch(21.76, 70.75, 301.80°)
OKLab	oklab(34.11% -0.0007 -0.1742)
OKLCH	oklch(34.11% 0.174 269.8)
XYZ	xyz(6.0853, 3.4480, 26.7250)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2390 #90881B

analogous

#1B5D90 #1B2390 #4D1B90

triadic

#1B2390 #901B23 #23901B

tetradic

#1B2390 #901B5D #90881B #1B904D

square

#1B2390 #901B5D #90881B #1B904D

split-complementary

#1B2390 #904D1B #5D901B

monochromatic

#080A29 #11165C #1B2390 #2530C4 #4953DD

Accessibility & contrast

On white

12.43

#1B2390 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B2390 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2390

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2390	#FFFFFF	#000000	##FFFFFF
##1B2390	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A93

Deuteranopia (green-blind)

#002E8E

Tritanopia (blue-blind)

#004357

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2390;
/* rgb */ color: rgb(27, 35, 144);
/* oklch */ color: oklch(34.1% 0.174 269.8);

Tailwind

colors: {
  custom: {
    50: '#6e5fb2',
    500: '#1b2390',
    950: '#000000',
  },
}

SCSS

$custom: #1b2390;
$custom-light: #6e5fb2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2390",
  "rgb": {
    "r": 27,
    "g": 35,
    "b": 144
  },
  "hsl": {
    "h": 235.897,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34108,
    "c": 0.17417,
    "h": 269.8
  },
  "luminance": 0.03449
}

Semantic roles & 50–950 ramp

primary

#1B2390

secondary

#BFB748

accent

#DF3DEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B2390

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

Preview Lab → · Contrast checker → · Palette generator →