#1B134F#1B134F

#1B134F is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.3% C 0.104 H 281.4°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B134F
RGB	rgb(27, 19, 79)
HSL	hsl(248, 61%, 19%)
HSV	hsv(248, 76%, 31%)
CMYK	cmyk(65.8%, 75.9%, 0%, 69%)
CIE-LAB	lab(11.01, 23.76, -35.51)
CIE-LCH	lch(11.01, 42.73, 303.79°)
OKLab	oklab(24.31% 0.0206 -0.1023)
OKLCH	oklch(24.31% 0.104 281.4)
XYZ	xyz(2.0957, 1.2631, 7.5290)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B134F #474F13

analogous

#13294F #1B134F #39134F

triadic

#1B134F #4F1B13 #134F1B

tetradic

#1B134F #4F1329 #474F13 #134F39

square

#1B134F #4F1329 #474F13 #134F39

split-complementary

#1B134F #4F3913 #294F13

monochromatic

#080619 #0A071E #1B134F #2C1F80 #3D2BB2

Accessibility & contrast

On white

16.77

#1B134F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#1B134F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B134F

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B134F	#FFFFFF	#000000	##FFFFFF
##1B134F	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002051

Deuteranopia (green-blind)

#001B4E

Tritanopia (blue-blind)

#00232F

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #1b134f;
/* rgb */ color: rgb(27, 19, 79);
/* oklch */ color: oklch(24.3% 0.104 281.4);

Tailwind

colors: {
  custom: {
    50: '#5f5181',
    500: '#1b134f',
    950: '#000000',
  },
}

SCSS

$custom: #1b134f;
$custom-light: #5f5181;
$custom-dark: #000000;

JSON

{
  "hex": "#1b134f",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 79
  },
  "hsl": {
    "h": 248,
    "s": 61.224,
    "l": 19.216
  },
  "oklch": {
    "l": 0.24309,
    "c": 0.10436,
    "h": 281.4
  },
  "luminance": 0.01263
}

Semantic roles & 50–950 ramp

primary

#1B134F

secondary

#7D8836

accent

#E443CF

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B134F

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

Preview Lab → · Contrast checker → · Palette generator →