#1C4D9F#1C4D9F

#1C4D9F is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.7% C 0.144 H 260.2°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#1C4D9F
RGB	rgb(28, 77, 159)
HSL	hsl(218, 70%, 37%)
HSV	hsv(218, 82%, 62%)
CMYK	cmyk(82.4%, 51.6%, 0%, 37.6%)
CIE-LAB	lab(34.10, 15.18, -49.11)
CIE-LCH	lch(34.10, 51.40, 287.17°)
OKLab	oklab(43.69% -0.0244 -0.1414)
OKLCH	oklch(43.69% 0.144 260.2)
XYZ	xyz(9.3885, 8.0567, 33.8544)
Luminance	0.0806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4D9F #9F6E1C

analogous

#1C8F9F #1C4D9F #2D1C9F

triadic

#1C4D9F #9F1C4D #4D9F1C

tetradic

#1C4D9F #9F1C8F #9F6E1C #1C9F2D

square

#1C4D9F #9F1C8F #9F6E1C #1C9F2D

split-complementary

#1C4D9F #9F2D1C #8F9F1C

monochromatic

#0A1B37 #13346B #1C4D9F #2566D3 #5489E1

Accessibility & contrast

On white

8.04

#1C4D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#1C4D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4D9F

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4D9F	#FFFFFF	#000000	##FFFFFF
##1C4D9F	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1856A2

Deuteranopia (green-blind)

#004B9D

Tritanopia (blue-blind)

#00616E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1c4d9f;
/* rgb */ color: rgb(28, 77, 159);
/* oklch */ color: oklch(43.7% 0.144 260.2);

Tailwind

colors: {
  custom: {
    50: '#6f7ebc',
    500: '#1c4d9f',
    950: '#000000',
  },
}

SCSS

$custom: #1c4d9f;
$custom-light: #6f7ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4d9f",
  "rgb": {
    "r": 28,
    "g": 77,
    "b": 159
  },
  "hsl": {
    "h": 217.557,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43689,
    "c": 0.14354,
    "h": 260.2
  },
  "luminance": 0.08058
}

Semantic roles & 50–950 ramp

primary

#1C4D9F

secondary

#C49A53

accent

#AA3BED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1C4D9F

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

Preview Lab → · Contrast checker → · Palette generator →