#1C4B9E#1C4B9E

#1C4B9E is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.2% C 0.145 H 260.8°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#1C4B9E
RGB	rgb(28, 75, 158)
HSL	hsl(218, 70%, 36%)
HSV	hsv(218, 82%, 62%)
CMYK	cmyk(82.3%, 52.5%, 0%, 38%)
CIE-LAB	lab(33.45, 16.13, -49.56)
CIE-LCH	lch(33.45, 52.12, 288.03°)
OKLab	oklab(43.17% -0.023 -0.1428)
OKLCH	oklch(43.17% 0.145 260.8)
XYZ	xyz(9.1643, 7.7465, 33.3534)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4B9E #9E6F1C

analogous

#1C8C9E #1C4B9E #2E1C9E

triadic

#1C4B9E #9E1C4B #4B9E1C

tetradic

#1C4B9E #9E1C8C #9E6F1C #1C9E2E

square

#1C4B9E #9E1C8C #9E6F1C #1C9E2E

split-complementary

#1C4B9E #9E2E1C #8C9E1C

monochromatic

#0A1A36 #13326A #1C4B9E #2564D2 #5487E1

Accessibility & contrast

On white

8.24

#1C4B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1C4B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4B9E

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4B9E	#FFFFFF	#000000	##FFFFFF
##1C4B9E	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1155A1

Deuteranopia (green-blind)

#00499C

Tritanopia (blue-blind)

#005F6D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c4b9e;
/* rgb */ color: rgb(28, 75, 158);
/* oklch */ color: oklch(43.2% 0.145 260.8);

Tailwind

colors: {
  custom: {
    50: '#6f7cbb',
    500: '#1c4b9e',
    950: '#000000',
  },
}

SCSS

$custom: #1c4b9e;
$custom-light: #6f7cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4b9e",
  "rgb": {
    "r": 28,
    "g": 75,
    "b": 158
  },
  "hsl": {
    "h": 218.308,
    "s": 69.892,
    "l": 36.471
  },
  "oklch": {
    "l": 0.43168,
    "c": 0.14466,
    "h": 260.8
  },
  "luminance": 0.07748
}

Semantic roles & 50–950 ramp

primary

#1C4B9E

secondary

#C49B52

accent

#AC3BED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1C4B9E

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

Preview Lab → · Contrast checker → · Palette generator →