#1B144D#1B144D

#1B144D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.3% C 0.100 H 281.5°. Best body text is #FFFFFF at 16.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B144D
RGB	rgb(27, 20, 77)
HSL	hsl(247, 59%, 19%)
HSV	hsv(247, 74%, 30%)
CMYK	cmyk(64.9%, 74%, 0%, 69.8%)
CIE-LAB	lab(11.06, 22.36, -34.07)
CIE-LCH	lch(11.06, 40.75, 303.28°)
OKLab	oklab(24.28% 0.0199 -0.0981)
OKLCH	oklch(24.28% 0.1 281.5)
XYZ	xyz(2.0413, 1.2690, 7.1571)
Luminance	0.0127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B144D #464D14

analogous

#142A4D #1B144D #38144D

triadic

#1B144D #4D1B14 #144D1B

tetradic

#1B144D #4D142A #464D14 #144D38

square

#1B144D #4D142A #464D14 #144D38

split-complementary

#1B144D #4D3814 #2A4D14

monochromatic

#090618 #0A071C #1B144D #2C217E #3D2DAE

Accessibility & contrast

On white

16.75

#1B144D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#1B144D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B144D

16.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B144D	#FFFFFF	#000000	##FFFFFF
##1B144D	1.00	16.75	1.25	16.75
#FFFFFF	16.75	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204F

Deuteranopia (green-blind)

#001C4C

Tritanopia (blue-blind)

#00232E

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #1b144d;
/* rgb */ color: rgb(27, 20, 77);
/* oklch */ color: oklch(24.3% 0.100 281.5);

Tailwind

colors: {
  custom: {
    50: '#5e527f',
    500: '#1b144d',
    950: '#000000',
  },
}

SCSS

$custom: #1b144d;
$custom-light: #5e527f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b144d",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 77
  },
  "hsl": {
    "h": 247.368,
    "s": 58.763,
    "l": 19.02
  },
  "oklch": {
    "l": 0.24276,
    "c": 0.10009,
    "h": 281.5
  },
  "luminance": 0.01269
}

Semantic roles & 50–950 ramp

primary

#1B144D

secondary

#7C8538

accent

#E246CF

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B144D

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

Preview Lab → · Contrast checker → · Palette generator →