#1C3F9D#1C3F9D

#1C3F9D is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.158 H 264.6°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#1C3F9D
RGB	rgb(28, 63, 157)
HSL	hsl(224, 70%, 36%)
HSV	hsv(224, 82%, 62%)
CMYK	cmyk(82.2%, 59.9%, 0%, 38.4%)
CIE-LAB	lab(30.00, 23.92, -54.57)
CIE-LCH	lch(30.00, 59.58, 293.67°)
OKLab	oklab(40.53% -0.0149 -0.1577)
OKLCH	oklch(40.53% 0.158 264.6)
XYZ	xyz(8.3400, 6.2352, 32.6557)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3F9D #9D7A1C

analogous

#1C809D #1C3F9D #3A1C9D

triadic

#1C3F9D #9D1C3F #3F9D1C

tetradic

#1C3F9D #9D1C80 #9D7A1C #1C9D3A

square

#1C3F9D #9D1C80 #9D7A1C #1C9D3A

split-complementary

#1C3F9D #9D3A1C #809D1C

monochromatic

#091535 #132A69 #1C3F9D #2554D1 #5379E0

Accessibility & contrast

On white

9.34

#1C3F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1C3F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3F9D

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3F9D	#FFFFFF	#000000	##FFFFFF
##1C3F9D	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA0

Deuteranopia (green-blind)

#00419B

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1c3f9d;
/* rgb */ color: rgb(28, 63, 157);
/* oklch */ color: oklch(40.5% 0.158 264.6);

Tailwind

colors: {
  custom: {
    50: '#6f73bb',
    500: '#1c3f9d',
    950: '#000000',
  },
}

SCSS

$custom: #1c3f9d;
$custom-light: #6f73bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3f9d",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 157
  },
  "hsl": {
    "h": 223.721,
    "s": 69.73,
    "l": 36.275
  },
  "oklch": {
    "l": 0.40535,
    "c": 0.15845,
    "h": 264.6
  },
  "luminance": 0.06236
}

Semantic roles & 50–950 ramp

primary

#1C3F9D

secondary

#C3A451

accent

#BC3BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C3F9D

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

Preview Lab → · Contrast checker → · Palette generator →