#1B179E#1B179E

#1B179E is a dark, highly saturated blue. Relative luminance 0.033; OKLCH L 34.2% C 0.201 H 269.9°. Best body text is #FFFFFF at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#1B179E
RGB	rgb(27, 23, 158)
HSL	hsl(242, 75%, 35%)
HSV	hsv(242, 85%, 62%)
CMYK	cmyk(82.9%, 85.4%, 0%, 38%)
CIE-LAB	lab(21.26, 48.26, -69.58)
CIE-LCH	lch(21.26, 84.68, 304.75°)
OKLab	oklab(34.25% -0.0003 -0.2014)
OKLCH	oklch(34.25% 0.201 269.9)
XYZ	xyz(6.9279, 3.3136, 32.6156)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B179E #9A9E17

analogous

#17569E #1B179E #5E179E

triadic

#1B179E #9E1B17 #179E1B

tetradic

#1B179E #9E1756 #9A9E17 #179E5E

square

#1B179E #9E1756 #9A9E17 #179E5E

split-complementary

#1B179E #9E5E17 #569E17

monochromatic

#090733 #120F69 #1B179E #241FD3 #4F4BE5

Accessibility & contrast

On white

12.63

#1B179E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1B179E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B179E

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B179E	#FFFFFF	#000000	##FFFFFF
##1B179E	1.00	12.63	1.66	12.63
#FFFFFF	12.63	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA2

Deuteranopia (green-blind)

#002C9C

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b179e;
/* rgb */ color: rgb(27, 23, 158);
/* oklch */ color: oklch(34.2% 0.201 269.9);

Tailwind

colors: {
  custom: {
    50: '#7359bc',
    500: '#1b179e',
    950: '#000000',
  },
}

SCSS

$custom: #1b179e;
$custom-light: #7359bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b179e",
  "rgb": {
    "r": 27,
    "g": 23,
    "b": 158
  },
  "hsl": {
    "h": 241.778,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34247,
    "c": 0.20137,
    "h": 269.9
  },
  "luminance": 0.03314
}

Semantic roles & 50–950 ramp

primary

#1B179E

secondary

#C3C64A

accent

#F137EC

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B179E

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

Preview Lab → · Contrast checker → · Palette generator →