#1B1E4E#1B1E4E

#1B1E4E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.4% C 0.087 H 276.0°. Best body text is #FFFFFF at 15.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B1E4E
RGB	rgb(27, 30, 78)
HSL	hsl(236, 49%, 21%)
HSV	hsv(236, 65%, 31%)
CMYK	cmyk(65.4%, 61.5%, 0%, 69.4%)
CIE-LAB	lab(13.89, 15.58, -30.14)
CIE-LCH	lch(13.89, 33.93, 297.34°)
OKLab	oklab(26.39% 0.0091 -0.0865)
OKLCH	oklch(26.39% 0.087 276)
XYZ	xyz(2.2910, 1.7114, 7.4159)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1E4E #4E4B1B

analogous

#1B374E #1B1E4E #311B4E

triadic

#1B1E4E #4E1B1E #1E4E1B

tetradic

#1B1E4E #4E1B37 #4E4B1B #1B4E31

square

#1B1E4E #4E1B37 #4E4B1B #1B4E31

split-complementary

#1B1E4E #4E311B #374E1B

monochromatic

#080917 #0B0D21 #1B1E4E #2B2F7B #3A41A9

Accessibility & contrast

On white

15.64

#1B1E4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#1B1E4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1E4E

15.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1E4E	#FFFFFF	#000000	##FFFFFF
##1B1E4E	1.00	15.64	1.34	15.64
#FFFFFF	15.64	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002650

Deuteranopia (green-blind)

#00214D

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1b1e4e;
/* rgb */ color: rgb(27, 30, 78);
/* oklch */ color: oklch(26.4% 0.087 276.0);

Tailwind

colors: {
  custom: {
    50: '#5d5980',
    500: '#1b1e4e',
    950: '#000000',
  },
}

SCSS

$custom: #1b1e4e;
$custom-light: #5d5980;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1e4e",
  "rgb": {
    "r": 27,
    "g": 30,
    "b": 78
  },
  "hsl": {
    "h": 236.471,
    "s": 48.571,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26387,
    "c": 0.08694,
    "h": 276
  },
  "luminance": 0.01712
}

Semantic roles & 50–950 ramp

primary

#1B1E4E

secondary

#848041

accent

#D050D8

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#05030A

muted

#79787C

Preview Lab

Preview with #1B1E4E

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

Preview Lab → · Contrast checker → · Palette generator →