#1B176C#1B176C

#1B176C is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.140 H 274.7°. Best body text is #FFFFFF at 15.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B176C
RGB	rgb(27, 23, 108)
HSL	hsl(243, 65%, 26%)
HSV	hsv(243, 79%, 42%)
CMYK	cmyk(75%, 78.7%, 0%, 57.6%)
CIE-LAB	lab(15.11, 31.70, -48.21)
CIE-LCH	lch(15.11, 57.70, 303.33°)
OKLab	oklab(28.18% 0.0115 -0.1394)
OKLCH	oklch(28.18% 0.14 274.7)
XYZ	xyz(3.4643, 1.9282, 14.3741)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B176C #686C17

analogous

#173D6C #1B176C #45176C

triadic

#1B176C #6C1B17 #176C1B

tetradic

#1B176C #6C173D #686C17 #176C45

square

#1B176C #6C173D #686C17 #176C45

split-complementary

#1B176C #6C4517 #3D6C17

monochromatic

#060519 #0E0C3A #1B176C #28229E #342CD1

Accessibility & contrast

On white

15.15

#1B176C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B176C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B176C

15.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B176C	#FFFFFF	#000000	##FFFFFF
##1B176C	1.00	15.15	1.39	15.15
#FFFFFF	15.15	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6E

Deuteranopia (green-blind)

#00226A

Tritanopia (blue-blind)

#003040

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b176c;
/* rgb */ color: rgb(27, 23, 108);
/* oklch */ color: oklch(28.2% 0.140 274.7);

Tailwind

colors: {
  custom: {
    50: '#665597',
    500: '#1b176c',
    950: '#000000',
  },
}

SCSS

$custom: #1b176c;
$custom-light: #665597;
$custom-dark: #000000;

JSON

{
  "hex": "#1b176c",
  "rgb": {
    "r": 27,
    "g": 23,
    "b": 108
  },
  "hsl": {
    "h": 242.824,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.2818,
    "c": 0.13988,
    "h": 274.7
  },
  "luminance": 0.01929
}

Semantic roles & 50–950 ramp

primary

#1B176C

secondary

#9DA23D

accent

#E840E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B176C

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

Preview Lab → · Contrast checker → · Palette generator →