#1D154B#1D154B

#1D154B is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.4% C 0.095 H 283.6°. Best body text is #FFFFFF at 16.65:1 contrast (WCAG AA passes).

Color values

HEX	#1D154B
RGB	rgb(29, 21, 75)
HSL	hsl(249, 56%, 19%)
HSV	hsv(249, 72%, 29%)
CMYK	cmyk(61.3%, 72%, 0%, 70.6%)
CIE-LAB	lab(11.31, 21.33, -32.26)
CIE-LCH	lch(11.31, 38.67, 303.47°)
OKLab	oklab(24.45% 0.0223 -0.0927)
OKLCH	oklch(24.45% 0.095 283.6)
XYZ	xyz(2.0445, 1.3054, 6.7995)
Luminance	0.0131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D154B #434B15

analogous

#15284B #1D154B #38154B

triadic

#1D154B #4B1D15 #154B1D

tetradic

#1D154B #4B1528 #434B15 #154B38

square

#1D154B #4B1528 #434B15 #154B38

split-complementary

#1D154B #4B3815 #284B15

monochromatic

#090718 #0B081B #1D154B #2F227B #4230AB

Accessibility & contrast

On white

16.65

#1D154B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#1D154B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D154B

16.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D154B	#FFFFFF	#000000	##FFFFFF
##1D154B	1.00	16.65	1.26	16.65
#FFFFFF	16.65	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204D

Deuteranopia (green-blind)

#001C4A

Tritanopia (blue-blind)

#07232D

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #1d154b;
/* rgb */ color: rgb(29, 21, 75);
/* oklch */ color: oklch(24.4% 0.095 283.6);

Tailwind

colors: {
  custom: {
    50: '#5f537e',
    500: '#1d154b',
    950: '#000000',
  },
}

SCSS

$custom: #1d154b;
$custom-light: #5f537e;
$custom-dark: #000000;

JSON

{
  "hex": "#1d154b",
  "rgb": {
    "r": 29,
    "g": 21,
    "b": 75
  },
  "hsl": {
    "h": 248.889,
    "s": 56.25,
    "l": 18.824
  },
  "oklch": {
    "l": 0.2445,
    "c": 0.09534,
    "h": 283.6
  },
  "luminance": 0.01306
}

Semantic roles & 50–950 ramp

primary

#1D154B

secondary

#788339

accent

#E048C9

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1D154B

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

Preview Lab → · Contrast checker → · Palette generator →