#1C177D#1C177D

#1C177D is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.2% C 0.162 H 273.1°. Best body text is #FFFFFF at 14.31:1 contrast (WCAG AA passes).

Color values

HEX	#1C177D
RGB	rgb(28, 23, 125)
HSL	hsl(243, 69%, 29%)
HSV	hsv(243, 82%, 49%)
CMYK	cmyk(77.6%, 81.6%, 0%, 51%)
CIE-LAB	lab(17.18, 37.68, -55.75)
CIE-LCH	lch(17.18, 67.29, 304.05°)
OKLab	oklab(30.25% 0.0088 -0.1613)
OKLCH	oklch(30.25% 0.162 273.1)
XYZ	xyz(4.4857, 2.3399, 19.6133)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C177D #787D17

analogous

#17457D #1C177D #4F177D

triadic

#1C177D #7D1C17 #177D1C

tetradic

#1C177D #7D1745 #787D17 #177D4F

square

#1C177D #7D1745 #787D17 #177D4F

split-complementary

#1C177D #7D4F17 #457D17

monochromatic

#06051A #100D49 #1C177D #2821B1 #3D35DA

Accessibility & contrast

On white

14.31

#1C177D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1C177D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C177D

14.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C177D	#FFFFFF	#000000	##FFFFFF
##1C177D	1.00	14.31	1.47	14.31
#FFFFFF	14.31	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F80

Deuteranopia (green-blind)

#00257B

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1c177d;
/* rgb */ color: rgb(28, 23, 125);
/* oklch */ color: oklch(30.2% 0.162 273.1);

Tailwind

colors: {
  custom: {
    50: '#6b57a4',
    500: '#1c177d',
    950: '#000000',
  },
}

SCSS

$custom: #1c177d;
$custom-light: #6b57a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c177d",
  "rgb": {
    "r": 28,
    "g": 23,
    "b": 125
  },
  "hsl": {
    "h": 242.941,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30245,
    "c": 0.16154,
    "h": 273.1
  },
  "luminance": 0.0234
}

Semantic roles & 50–950 ramp

primary

#1C177D

secondary

#ACB23E

accent

#EC3CE3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1C177D

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

Preview Lab → · Contrast checker → · Palette generator →