#1B176D#1B176D

#1B176D is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.3% C 0.141 H 274.6°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B176D
RGB	rgb(27, 23, 109)
HSL	hsl(243, 65%, 26%)
HSV	hsv(243, 79%, 43%)
CMYK	cmyk(75.2%, 78.9%, 0%, 57.3%)
CIE-LAB	lab(15.22, 32.06, -48.67)
CIE-LCH	lch(15.22, 58.28, 303.37°)
OKLab	oklab(28.3% 0.0113 -0.1408)
OKLCH	oklch(28.3% 0.141 274.6)
XYZ	xyz(3.5178, 1.9496, 14.6560)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B176D #696D17

analogous

#173E6D #1B176D #46176D

triadic

#1B176D #6D1B17 #176D1B

tetradic

#1B176D #6D173E #696D17 #176D46

square

#1B176D #6D173E #696D17 #176D46

split-complementary

#1B176D #6D4617 #3E6D17

monochromatic

#060519 #0E0C3A #1B176D #2822A0 #342CD2

Accessibility & contrast

On white

15.11

#1B176D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B176D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B176D

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B176D	#FFFFFF	#000000	##FFFFFF
##1B176D	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6F

Deuteranopia (green-blind)

#00226B

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b176d;
/* rgb */ color: rgb(27, 23, 109);
/* oklch */ color: oklch(28.3% 0.141 274.6);

Tailwind

colors: {
  custom: {
    50: '#665598',
    500: '#1b176d',
    950: '#000000',
  },
}

SCSS

$custom: #1b176d;
$custom-light: #665598;
$custom-dark: #000000;

JSON

{
  "hex": "#1b176d",
  "rgb": {
    "r": 27,
    "g": 23,
    "b": 109
  },
  "hsl": {
    "h": 242.791,
    "s": 65.152,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28295,
    "c": 0.14121,
    "h": 274.6
  },
  "luminance": 0.0195
}

Semantic roles & 50–950 ramp

primary

#1B176D

secondary

#9EA33D

accent

#E840E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B176D

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

Preview Lab → · Contrast checker → · Palette generator →