#1C1B79#1C1B79

#1C1B79 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.153 H 273.0°. Best body text is #FFFFFF at 14.17:1 contrast (WCAG AA passes).

Color values

HEX	#1C1B79
RGB	rgb(28, 27, 121)
HSL	hsl(241, 64%, 29%)
HSV	hsv(241, 78%, 47%)
CMYK	cmyk(76.9%, 77.7%, 0%, 52.5%)
CIE-LAB	lab(17.51, 34.01, -52.64)
CIE-LCH	lch(17.51, 62.67, 302.86°)
OKLab	oklab(30.34% 0.008 -0.1523)
OKLCH	oklch(30.34% 0.153 273)
XYZ	xyz(4.3209, 2.4108, 18.3231)
Luminance	0.0241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1B79 #78791B

analogous

#1B4979 #1C1B79 #4B1B79

triadic

#1C1B79 #791C1B #1B791C

tetradic

#1C1B79 #791B49 #78791B #1B794B

square

#1C1B79 #791B49 #78791B #1B794B

split-complementary

#1C1B79 #794B1B #49791B

monochromatic

#060619 #101047 #1C1B79 #2826AB #3D3BD3

Accessibility & contrast

On white

14.17

#1C1B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1C1B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1B79

14.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1B79	#FFFFFF	#000000	##FFFFFF
##1C1B79	1.00	14.17	1.48	14.17
#FFFFFF	14.17	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7C

Deuteranopia (green-blind)

#002677

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1c1b79;
/* rgb */ color: rgb(28, 27, 121);
/* oklch */ color: oklch(30.3% 0.153 273.0);

Tailwind

colors: {
  custom: {
    50: '#6959a1',
    500: '#1c1b79',
    950: '#000000',
  },
}

SCSS

$custom: #1c1b79;
$custom-light: #6959a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1b79",
  "rgb": {
    "r": 28,
    "g": 27,
    "b": 121
  },
  "hsl": {
    "h": 240.638,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3034,
    "c": 0.15254,
    "h": 273
  },
  "luminance": 0.02411
}

Semantic roles & 50–950 ramp

primary

#1C1B79

secondary

#ACAD43

accent

#E741E5

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #1C1B79

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

Preview Lab → · Contrast checker → · Palette generator →