#1C1778#1C1778

#1C1778 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.155 H 273.7°. Best body text is #FFFFFF at 14.55:1 contrast (WCAG AA passes).

Color values

HEX	#1C1778
RGB	rgb(28, 23, 120)
HSL	hsl(243, 68%, 28%)
HSV	hsv(243, 81%, 47%)
CMYK	cmyk(76.7%, 80.8%, 0%, 52.9%)
CIE-LAB	lab(16.58, 35.98, -53.54)
CIE-LCH	lch(16.58, 64.51, 303.90°)
OKLab	oklab(29.65% 0.01 -0.1549)
OKLCH	oklch(29.65% 0.155 273.7)
XYZ	xyz(4.1743, 2.2153, 17.9733)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1778 #737817

analogous

#174278 #1C1778 #4C1778

triadic

#1C1778 #781C17 #17781C

tetradic

#1C1778 #781742 #737817 #17784C

square

#1C1778 #781742 #737817 #17784C

split-complementary

#1C1778 #784C17 #427817

monochromatic

#06051A #100D45 #1C1778 #2821AB #3A32D8

Accessibility & contrast

On white

14.55

#1C1778 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1C1778 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1778

14.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1778	#FFFFFF	#000000	##FFFFFF
##1C1778	1.00	14.55	1.44	14.55
#FFFFFF	14.55	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7B

Deuteranopia (green-blind)

#002476

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1c1778;
/* rgb */ color: rgb(28, 23, 120);
/* oklch */ color: oklch(29.6% 0.155 273.7);

Tailwind

colors: {
  custom: {
    50: '#6956a0',
    500: '#1c1778',
    950: '#000000',
  },
}

SCSS

$custom: #1c1778;
$custom-light: #6956a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1778",
  "rgb": {
    "r": 28,
    "g": 23,
    "b": 120
  },
  "hsl": {
    "h": 243.093,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.2965,
    "c": 0.15523,
    "h": 273.7
  },
  "luminance": 0.02216
}

Semantic roles & 50–950 ramp

primary

#1C1778

secondary

#A7AD3E

accent

#EB3DE2

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #1C1778

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

Preview Lab → · Contrast checker → · Palette generator →