#1C4E9C#1C4E9C

#1C4E9C is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.7% C 0.138 H 259.3°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#1C4E9C
RGB	rgb(28, 78, 156)
HSL	hsl(217, 70%, 36%)
HSV	hsv(217, 82%, 61%)
CMYK	cmyk(82.1%, 50%, 0%, 38.8%)
CIE-LAB	lab(34.18, 13.30, -47.18)
CIE-LCH	lch(34.18, 49.01, 285.74°)
OKLab	oklab(43.68% -0.0256 -0.1357)
OKLCH	oklch(43.68% 0.138 259.3)
XYZ	xyz(9.2018, 8.0948, 32.5235)
Luminance	0.0810 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4E9C #9C6A1C

analogous

#1C8E9C #1C4E9C #2A1C9C

triadic

#1C4E9C #9C1C4E #4E9C1C

tetradic

#1C4E9C #9C1C8E #9C6A1C #1C9C2A

square

#1C4E9C #9C1C8E #9C6A1C #1C9C2A

split-complementary

#1C4E9C #9C2A1C #8E9C1C

monochromatic

#091A34 #133468 #1C4E9C #2568D0 #528AE0

Accessibility & contrast

On white

8.02

#1C4E9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1C4E9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4E9C

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4E9C	#FFFFFF	#000000	##FFFFFF
##1C4E9C	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F579F

Deuteranopia (green-blind)

#004B9A

Tritanopia (blue-blind)

#00616D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1c4e9c;
/* rgb */ color: rgb(28, 78, 156);
/* oklch */ color: oklch(43.7% 0.138 259.3);

Tailwind

colors: {
  custom: {
    50: '#6e7eba',
    500: '#1c4e9c',
    950: '#000000',
  },
}

SCSS

$custom: #1c4e9c;
$custom-light: #6e7eba;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4e9c",
  "rgb": {
    "r": 28,
    "g": 78,
    "b": 156
  },
  "hsl": {
    "h": 216.563,
    "s": 69.565,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43681,
    "c": 0.13812,
    "h": 259.3
  },
  "luminance": 0.08096
}

Semantic roles & 50–950 ramp

primary

#1C4E9C

secondary

#C39651

accent

#A73BEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1C4E9C

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

Preview Lab → · Contrast checker → · Palette generator →