#1B2C8E#1B2C8E

#1B2C8E is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.4% C 0.162 H 268.4°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C8E
RGB	rgb(27, 44, 142)
HSL	hsl(231, 68%, 33%)
HSV	hsv(231, 81%, 56%)
CMYK	cmyk(81%, 69%, 0%, 44.3%)
CIE-LAB	lab(23.63, 30.83, -55.80)
CIE-LCH	lch(23.63, 63.75, 298.92°)
OKLab	oklab(35.39% -0.0045 -0.1616)
OKLCH	oklch(35.39% 0.162 268.4)
XYZ	xyz(6.2335, 3.9867, 26.0269)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C8E #8E7D1B

analogous

#1B658E #1B2C8E #431B8E

triadic

#1B2C8E #8E1B2C #2C8E1B

tetradic

#1B2C8E #8E1B65 #8E7D1B #1B8E43

square

#1B2C8E #8E1B65 #8E7D1B #1B8E43

split-complementary

#1B2C8E #8E431B #658E1B

monochromatic

#070C27 #111C5B #1B2C8E #253CC1 #475DDC

Accessibility & contrast

On white

11.68

#1B2C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1B2C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C8E

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C8E	#FFFFFF	#000000	##FFFFFF
##1B2C8E	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E91

Deuteranopia (green-blind)

#00338C

Tritanopia (blue-blind)

#004759

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2c8e;
/* rgb */ color: rgb(27, 44, 142);
/* oklch */ color: oklch(35.4% 0.162 268.4);

Tailwind

colors: {
  custom: {
    50: '#6d65b0',
    500: '#1b2c8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c8e;
$custom-light: #6d65b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c8e",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 142
  },
  "hsl": {
    "h": 231.13,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.35394,
    "c": 0.16164,
    "h": 268.4
  },
  "luminance": 0.03987
}

Semantic roles & 50–950 ramp

primary

#1B2C8E

secondary

#BEAC47

accent

#D13DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1B2C8E

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

Preview Lab → · Contrast checker → · Palette generator →