#1B176B#1B176B

#1B176B is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.1% C 0.139 H 274.8°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B176B
RGB	rgb(27, 23, 107)
HSL	hsl(243, 65%, 25%)
HSV	hsv(243, 79%, 42%)
CMYK	cmyk(74.8%, 78.5%, 0%, 58%)
CIE-LAB	lab(14.99, 31.35, -47.74)
CIE-LCH	lch(14.99, 57.11, 303.29°)
OKLab	oklab(28.07% 0.0117 -0.138)
OKLCH	oklch(28.07% 0.139 274.8)
XYZ	xyz(3.4114, 1.9070, 14.0954)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B176B #676B17

analogous

#173D6B #1B176B #45176B

triadic

#1B176B #6B1B17 #176B1B

tetradic

#1B176B #6B173D #676B17 #176B45

square

#1B176B #6B173D #676B17 #176B45

split-complementary

#1B176B #6B4517 #3D6B17

monochromatic

#060519 #0E0C39 #1B176B #28229D #342DD0

Accessibility & contrast

On white

15.20

#1B176B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1B176B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B176B

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B176B	#FFFFFF	#000000	##FFFFFF
##1B176B	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00296D

Deuteranopia (green-blind)

#002269

Tritanopia (blue-blind)

#002F40

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b176b;
/* rgb */ color: rgb(27, 23, 107);
/* oklch */ color: oklch(28.1% 0.139 274.8);

Tailwind

colors: {
  custom: {
    50: '#655596',
    500: '#1b176b',
    950: '#000000',
  },
}

SCSS

$custom: #1b176b;
$custom-light: #655596;
$custom-dark: #000000;

JSON

{
  "hex": "#1b176b",
  "rgb": {
    "r": 27,
    "g": 23,
    "b": 107
  },
  "hsl": {
    "h": 242.857,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28065,
    "c": 0.13854,
    "h": 274.8
  },
  "luminance": 0.01907
}

Semantic roles & 50–950 ramp

primary

#1B176B

secondary

#9CA13D

accent

#E840E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1B176B

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

Preview Lab → · Contrast checker → · Palette generator →