#1C177A#1C177A

#1C177A is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.158 H 273.5°. Best body text is #FFFFFF at 14.45:1 contrast (WCAG AA passes).

Color values

HEX	#1C177A
RGB	rgb(28, 23, 122)
HSL	hsl(243, 68%, 28%)
HSV	hsv(243, 81%, 48%)
CMYK	cmyk(77%, 81.1%, 0%, 52.2%)
CIE-LAB	lab(16.82, 36.66, -54.43)
CIE-LCH	lch(16.82, 65.63, 303.97°)
OKLab	oklab(29.89% 0.0096 -0.1575)
OKLCH	oklch(29.89% 0.158 273.5)
XYZ	xyz(4.2970, 2.2644, 18.6192)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C177A #757A17

analogous

#17437A #1C177A #4D177A

triadic

#1C177A #7A1C17 #177A1C

tetradic

#1C177A #7A1743 #757A17 #177A4D

square

#1C177A #7A1743 #757A17 #177A4D

split-complementary

#1C177A #7A4D17 #437A17

monochromatic

#06051A #100D47 #1C177A #2821AD #3B33D9

Accessibility & contrast

On white

14.45

#1C177A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1C177A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C177A

14.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C177A	#FFFFFF	#000000	##FFFFFF
##1C177A	1.00	14.45	1.45	14.45
#FFFFFF	14.45	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7D

Deuteranopia (green-blind)

#002578

Tritanopia (blue-blind)

#003548

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1c177a;
/* rgb */ color: rgb(28, 23, 122);
/* oklch */ color: oklch(29.9% 0.158 273.5);

Tailwind

colors: {
  custom: {
    50: '#6a56a2',
    500: '#1c177a',
    950: '#000000',
  },
}

SCSS

$custom: #1c177a;
$custom-light: #6a56a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c177a",
  "rgb": {
    "r": 28,
    "g": 23,
    "b": 122
  },
  "hsl": {
    "h": 243.03,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.29887,
    "c": 0.15776,
    "h": 273.5
  },
  "luminance": 0.02265
}

Semantic roles & 50–950 ramp

primary

#1C177A

secondary

#A9AF3E

accent

#EB3DE2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1C177A

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

Preview Lab → · Contrast checker → · Palette generator →