#1C3C8E#1C3C8E

#1C3C8E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.141 H 264.5°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#1C3C8E
RGB	rgb(28, 60, 142)
HSL	hsl(223, 67%, 33%)
HSV	hsv(223, 80%, 56%)
CMYK	cmyk(80.3%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(27.93, 19.99, -48.76)
CIE-LCH	lch(27.93, 52.70, 292.29°)
OKLab	oklab(38.59% -0.0136 -0.1408)
OKLCH	oklch(38.59% 0.141 264.5)
XYZ	xyz(6.9755, 5.4308, 26.2666)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3C8E #8E6E1C

analogous

#1C758E #1C3C8E #351C8E

triadic

#1C3C8E #8E1C3C #3C8E1C

tetradic

#1C3C8E #8E1C75 #8E6E1C #1C8E35

square

#1C3C8E #8E1C75 #8E6E1C #1C8E35

split-complementary

#1C3C8E #8E351C #758E1C

monochromatic

#081128 #12265B #1C3C8E #2652C1 #4972DB

Accessibility & contrast

On white

10.07

#1C3C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1C3C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3C8E

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3C8E	#FFFFFF	#000000	##FFFFFF
##1C3C8E	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1c3c8e;
/* rgb */ color: rgb(28, 60, 142);
/* oklch */ color: oklch(38.6% 0.141 264.5);

Tailwind

colors: {
  custom: {
    50: '#6c71b0',
    500: '#1c3c8e',
    950: '#000000',
  },
}

SCSS

$custom: #1c3c8e;
$custom-light: #6c71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3c8e",
  "rgb": {
    "r": 28,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 223.158,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38594,
    "c": 0.14142,
    "h": 264.5
  },
  "luminance": 0.05432
}

Semantic roles & 50–950 ramp

primary

#1C3C8E

secondary

#BD9C49

accent

#BA3EEA

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1C3C8E

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

Preview Lab → · Contrast checker → · Palette generator →