#1C177F#1C177F

#1C177F is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.5% C 0.164 H 272.9°. Best body text is #FFFFFF at 14.20:1 contrast (WCAG AA passes).

Color values

HEX	#1C177F
RGB	rgb(28, 23, 127)
HSL	hsl(243, 69%, 29%)
HSV	hsv(243, 82%, 50%)
CMYK	cmyk(78%, 81.9%, 0%, 50.2%)
CIE-LAB	lab(17.42, 38.35, -56.62)
CIE-LCH	lch(17.42, 68.39, 304.11°)
OKLab	oklab(30.49% 0.0083 -0.1638)
OKLCH	oklch(30.49% 0.164 272.9)
XYZ	xyz(4.6148, 2.3915, 20.2930)
Luminance	0.0239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C177F #7A7F17

analogous

#17467F #1C177F #50177F

triadic

#1C177F #7F1C17 #177F1C

tetradic

#1C177F #7F1746 #7A7F17 #177F50

square

#1C177F #7F1746 #7A7F17 #177F50

split-complementary

#1C177F #7F5017 #467F17

monochromatic

#06051A #110E4B #1C177F #2720B3 #3E36DB

Accessibility & contrast

On white

14.20

#1C177F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1C177F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C177F

14.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C177F	#FFFFFF	#000000	##FFFFFF
##1C177F	1.00	14.20	1.48	14.20
#FFFFFF	14.20	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003082

Deuteranopia (green-blind)

#00267D

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1c177f;
/* rgb */ color: rgb(28, 23, 127);
/* oklch */ color: oklch(30.5% 0.164 272.9);

Tailwind

colors: {
  custom: {
    50: '#6b57a5',
    500: '#1c177f',
    950: '#000000',
  },
}

SCSS

$custom: #1c177f;
$custom-light: #6b57a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c177f",
  "rgb": {
    "r": 28,
    "g": 23,
    "b": 127
  },
  "hsl": {
    "h": 242.885,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30485,
    "c": 0.16404,
    "h": 272.9
  },
  "luminance": 0.02392
}

Semantic roles & 50–950 ramp

primary

#1C177F

secondary

#AEB43E

accent

#EC3CE4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1C177F

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

Preview Lab → · Contrast checker → · Palette generator →