#1B134B#1B134B

#1B134B is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.9% C 0.099 H 282.5°. Best body text is #FFFFFF at 16.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B134B
RGB	rgb(27, 19, 75)
HSL	hsl(249, 60%, 18%)
HSV	hsv(249, 75%, 29%)
CMYK	cmyk(64%, 74.7%, 0%, 70.6%)
CIE-LAB	lab(10.61, 22.30, -33.42)
CIE-LCH	lch(10.61, 40.18, 303.72°)
OKLab	oklab(23.89% 0.0213 -0.0962)
OKLCH	oklch(23.89% 0.099 282.5)
XYZ	xyz(1.9545, 1.2066, 6.7852)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B134B #434B13

analogous

#13274B #1B134B #37134B

triadic

#1B134B #4B1B13 #134B1B

tetradic

#1B134B #4B1327 #434B13 #134B37

square

#1B134B #4B1327 #434B13 #134B37

split-complementary

#1B134B #4B3713 #274B13

monochromatic

#090618 #09071A #1B134B #2D1F7C #3E2CAD

Accessibility & contrast

On white

16.92

#1B134B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#1B134B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B134B

16.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B134B	#FFFFFF	#000000	##FFFFFF
##1B134B	1.00	16.92	1.24	16.92
#FFFFFF	16.92	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F4D

Deuteranopia (green-blind)

#001B4A

Tritanopia (blue-blind)

#02212D

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #1b134b;
/* rgb */ color: rgb(27, 19, 75);
/* oklch */ color: oklch(23.9% 0.099 282.5);

Tailwind

colors: {
  custom: {
    50: '#5e517e',
    500: '#1b134b',
    950: '#000000',
  },
}

SCSS

$custom: #1b134b;
$custom-light: #5e517e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b134b",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 75
  },
  "hsl": {
    "h": 248.571,
    "s": 59.574,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23889,
    "c": 0.0985,
    "h": 282.5
  },
  "luminance": 0.01207
}

Semantic roles & 50–950 ramp

primary

#1B134B

secondary

#798436

accent

#E345CC

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B134B

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

Preview Lab → · Contrast checker → · Palette generator →