#1B2139#1B2139

#1B2139 is a dark, muted blue. Relative luminance 0.016; OKLCH L 25.5% C 0.046 H 272.1°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B2139
RGB	rgb(27, 33, 57)
HSL	hsl(228, 36%, 16%)
HSV	hsv(228, 53%, 22%)
CMYK	cmyk(52.6%, 42.1%, 0%, 77.6%)
CIE-LAB	lab(13.33, 5.22, -16.42)
CIE-LCH	lch(13.33, 17.23, 287.63°)
OKLab	oklab(25.47% 0.0017 -0.0462)
OKLCH	oklch(25.47% 0.046 272.1)
XYZ	xyz(1.7341, 1.6160, 4.0907)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2139 #39331B

analogous

#1B3039 #1B2139 #241B39

triadic

#1B2139 #391B21 #21391B

tetradic

#1B2139 #391B30 #39331B #1B3924

square

#1B2139 #391B30 #39331B #1B3924

split-complementary

#1B2139 #39241B #30391B

monochromatic

#0A0C15 #0A0C15 #1B2139 #2F3963 #42518C

Accessibility & contrast

On white

15.87

#1B2139 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#1B2139 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2139

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2139	#FFFFFF	#000000	##FFFFFF
##1B2139	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18243A

Deuteranopia (green-blind)

#162138

Tritanopia (blue-blind)

#10262A

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1b2139;
/* rgb */ color: rgb(27, 33, 57);
/* oklch */ color: oklch(25.5% 0.046 272.1);

Tailwind

colors: {
  custom: {
    50: '#595c6f',
    500: '#1b2139',
    950: '#000000',
  },
}

SCSS

$custom: #1b2139;
$custom-light: #595c6f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2139",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 57
  },
  "hsl": {
    "h": 228,
    "s": 35.714,
    "l": 16.471
  },
  "oklch": {
    "l": 0.25471,
    "c": 0.04624,
    "h": 272.1
  },
  "luminance": 0.01616
}

Semantic roles & 50–950 ramp

primary

#1B2139

secondary

#6E6542

accent

#B55CCC

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #1B2139

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

Preview Lab → · Contrast checker → · Palette generator →