#1B154D#1B154D

#1B154D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.5% C 0.099 H 281.1°. Best body text is #FFFFFF at 16.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B154D
RGB	rgb(27, 21, 77)
HSL	hsl(246, 57%, 19%)
HSV	hsv(246, 73%, 30%)
CMYK	cmyk(64.9%, 72.7%, 0%, 69.8%)
CIE-LAB	lab(11.31, 21.67, -33.65)
CIE-LCH	lch(11.31, 40.03, 302.78°)
OKLab	oklab(24.46% 0.0189 -0.0969)
OKLCH	oklch(24.46% 0.099 281.1)
XYZ	xyz(2.0593, 1.3050, 7.1631)
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

#1B154D #474D15

analogous

#152B4D #1B154D #37154D

triadic

#1B154D #4D1B15 #154D1B

tetradic

#1B154D #4D152B #474D15 #154D37

square

#1B154D #4D152B #474D15 #154D37

split-complementary

#1B154D #4D3715 #2B4D15

monochromatic

#080718 #0A081D #1B154D #2C227D #3D2FAD

Accessibility & contrast

On white

16.65

#1B154D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#1B154D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B154D

16.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B154D	#FFFFFF	#000000	##FFFFFF
##1B154D	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)

#00204F

Deuteranopia (green-blind)

#001C4C

Tritanopia (blue-blind)

#00232E

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #1b154d;
/* rgb */ color: rgb(27, 21, 77);
/* oklch */ color: oklch(24.5% 0.099 281.1);

Tailwind

colors: {
  custom: {
    50: '#5e537f',
    500: '#1b154d',
    950: '#000000',
  },
}

SCSS

$custom: #1b154d;
$custom-light: #5e537f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b154d",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 77
  },
  "hsl": {
    "h": 246.429,
    "s": 57.143,
    "l": 19.216
  },
  "oklch": {
    "l": 0.24459,
    "c": 0.09869,
    "h": 281.1
  },
  "luminance": 0.01305
}

Semantic roles & 50–950 ramp

primary

#1B154D

secondary

#7D8539

accent

#E047D0

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B154D

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

Preview Lab → · Contrast checker → · Palette generator →