#1C4D99#1C4D99

#1C4D99 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.2% C 0.135 H 259.2°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#1C4D99
RGB	rgb(28, 77, 153)
HSL	hsl(216, 69%, 35%)
HSV	hsv(216, 82%, 60%)
CMYK	cmyk(81.7%, 49.7%, 0%, 40%)
CIE-LAB	lab(33.68, 12.76, -46.18)
CIE-LCH	lch(33.68, 47.91, 285.45°)
OKLab	oklab(43.23% -0.0253 -0.1328)
OKLCH	oklch(43.23% 0.135 259.2)
XYZ	xyz(8.8804, 7.8535, 31.1786)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4D99 #99681C

analogous

#1C8B99 #1C4D99 #291C99

triadic

#1C4D99 #991C4D #4D991C

tetradic

#1C4D99 #991C8B #99681C #1C9929

square

#1C4D99 #991C8B #99681C #1C9929

split-complementary

#1C4D99 #99291C #8B991C

monochromatic

#091932 #133365 #1C4D99 #2567CD #5088DF

Accessibility & contrast

On white

8.17

#1C4D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1C4D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4D99

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4D99	#FFFFFF	#000000	##FFFFFF
##1C4D99	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20559C

Deuteranopia (green-blind)

#004A97

Tritanopia (blue-blind)

#005F6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c4d99;
/* rgb */ color: rgb(28, 77, 153);
/* oklch */ color: oklch(43.2% 0.135 259.2);

Tailwind

colors: {
  custom: {
    50: '#6e7eb8',
    500: '#1c4d99',
    950: '#000000',
  },
}

SCSS

$custom: #1c4d99;
$custom-light: #6e7eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4d99",
  "rgb": {
    "r": 28,
    "g": 77,
    "b": 153
  },
  "hsl": {
    "h": 216.48,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.43228,
    "c": 0.13519,
    "h": 259.2
  },
  "luminance": 0.07855
}

Semantic roles & 50–950 ramp

primary

#1C4D99

secondary

#C2954F

accent

#A73CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1C4D99

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

Preview Lab → · Contrast checker → · Palette generator →