#1B2C90#1B2C90

#1B2C90 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.6% C 0.164 H 268.4°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C90
RGB	rgb(27, 44, 144)
HSL	hsl(231, 68%, 34%)
HSV	hsv(231, 81%, 56%)
CMYK	cmyk(81.3%, 69.4%, 0%, 43.5%)
CIE-LAB	lab(23.83, 31.59, -56.71)
CIE-LCH	lch(23.83, 64.91, 299.12°)
OKLab	oklab(35.6% -0.0046 -0.1642)
OKLCH	oklch(35.6% 0.164 268.4)
XYZ	xyz(6.3850, 4.0473, 26.8248)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C90 #907F1B

analogous

#1B6690 #1B2C90 #441B90

triadic

#1B2C90 #901B2C #2C901B

tetradic

#1B2C90 #901B66 #907F1B #1B9044

square

#1B2C90 #901B66 #907F1B #1B9044

split-complementary

#1B2C90 #90441B #66901B

monochromatic

#080D29 #111C5C #1B2C90 #253CC4 #495EDD

Accessibility & contrast

On white

11.60

#1B2C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1B2C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C90

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C90	#FFFFFF	#000000	##FFFFFF
##1B2C90	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E93

Deuteranopia (green-blind)

#00338E

Tritanopia (blue-blind)

#00475A

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b2c90;
/* rgb */ color: rgb(27, 44, 144);
/* oklch */ color: oklch(35.6% 0.164 268.4);

Tailwind

colors: {
  custom: {
    50: '#6d65b2',
    500: '#1b2c90',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c90;
$custom-light: #6d65b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c90",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 144
  },
  "hsl": {
    "h": 231.282,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.356,
    "c": 0.16431,
    "h": 268.4
  },
  "luminance": 0.04048
}

Semantic roles & 50–950 ramp

primary

#1B2C90

secondary

#BFAD48

accent

#D23DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1B2C90

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

Preview Lab → · Contrast checker → · Palette generator →