#1C4A99#1C4A99

#1C4A99 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.6% C 0.139 H 260.5°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#1C4A99
RGB	rgb(28, 74, 153)
HSL	hsl(218, 69%, 35%)
HSV	hsv(218, 82%, 60%)
CMYK	cmyk(81.7%, 51.6%, 0%, 40%)
CIE-LAB	lab(32.80, 14.80, -47.60)
CIE-LCH	lch(32.80, 49.84, 287.27°)
OKLab	oklab(42.55% -0.0229 -0.137)
OKLCH	oklch(42.55% 0.139 260.5)
XYZ	xyz(8.6753, 7.4433, 31.1103)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4A99 #996B1C

analogous

#1C8899 #1C4A99 #2C1C99

triadic

#1C4A99 #991C4A #4A991C

tetradic

#1C4A99 #991C88 #996B1C #1C992C

square

#1C4A99 #991C88 #996B1C #1C992C

split-complementary

#1C4A99 #992C1C #88991C

monochromatic

#091832 #133165 #1C4A99 #2563CD #5085DF

Accessibility & contrast

On white

8.44

#1C4A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1C4A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4A99

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4A99	#FFFFFF	#000000	##FFFFFF
##1C4A99	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17539C

Deuteranopia (green-blind)

#004897

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1c4a99;
/* rgb */ color: rgb(28, 74, 153);
/* oklch */ color: oklch(42.6% 0.139 260.5);

Tailwind

colors: {
  custom: {
    50: '#6e7bb8',
    500: '#1c4a99',
    950: '#000000',
  },
}

SCSS

$custom: #1c4a99;
$custom-light: #6e7bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4a99",
  "rgb": {
    "r": 28,
    "g": 74,
    "b": 153
  },
  "hsl": {
    "h": 217.92,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.42553,
    "c": 0.13895,
    "h": 260.5
  },
  "luminance": 0.07444
}

Semantic roles & 50–950 ramp

primary

#1C4A99

secondary

#C2984F

accent

#AB3CEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1C4A99

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

Preview Lab → · Contrast checker → · Palette generator →