#1C4D9A#1C4D9A

#1C4D9A is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.3% C 0.137 H 259.4°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#1C4D9A
RGB	rgb(28, 77, 154)
HSL	hsl(217, 69%, 36%)
HSV	hsv(217, 82%, 60%)
CMYK	cmyk(81.8%, 50%, 0%, 39.6%)
CIE-LAB	lab(33.75, 13.17, -46.67)
CIE-LCH	lch(33.75, 48.49, 285.76°)
OKLab	oklab(43.3% -0.0251 -0.1343)
OKLCH	oklch(43.3% 0.137 259.4)
XYZ	xyz(8.9634, 7.8866, 31.6154)
Luminance	0.0789 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4D9A #9A691C

analogous

#1C8C9A #1C4D9A #2A1C9A

triadic

#1C4D9A #9A1C4D #4D9A1C

tetradic

#1C4D9A #9A1C8C #9A691C #1C9A2A

square

#1C4D9A #9A1C8C #9A691C #1C9A2A

split-complementary

#1C4D9A #9A2A1C #8C9A1C

monochromatic

#091932 #133366 #1C4D9A #2567CE #5188DF

Accessibility & contrast

On white

8.15

#1C4D9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1C4D9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4D9A

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4D9A	#FFFFFF	#000000	##FFFFFF
##1C4D9A	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F559D

Deuteranopia (green-blind)

#004A98

Tritanopia (blue-blind)

#00606C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c4d9a;
/* rgb */ color: rgb(28, 77, 154);
/* oklch */ color: oklch(43.3% 0.137 259.4);

Tailwind

colors: {
  custom: {
    50: '#6e7eb8',
    500: '#1c4d9a',
    950: '#000000',
  },
}

SCSS

$custom: #1c4d9a;
$custom-light: #6e7eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4d9a",
  "rgb": {
    "r": 28,
    "g": 77,
    "b": 154
  },
  "hsl": {
    "h": 216.667,
    "s": 69.231,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43304,
    "c": 0.13659,
    "h": 259.4
  },
  "luminance": 0.07888
}

Semantic roles & 50–950 ramp

primary

#1C4D9A

secondary

#C29650

accent

#A73CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1C4D9A

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

Preview Lab → · Contrast checker → · Palette generator →