#1C3B9D#1C3B9D

#1C3B9D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.163 H 265.6°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#1C3B9D
RGB	rgb(28, 59, 157)
HSL	hsl(226, 70%, 36%)
HSV	hsv(226, 82%, 62%)
CMYK	cmyk(82.2%, 62.4%, 0%, 38.4%)
CIE-LAB	lab(28.92, 26.64, -56.32)
CIE-LCH	lch(28.92, 62.30, 295.31°)
OKLab	oklab(39.73% -0.0124 -0.163)
OKLCH	oklch(39.73% 0.163 265.6)
XYZ	xyz(8.1265, 5.8082, 32.5845)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3B9D #9D7E1C

analogous

#1C7C9D #1C3B9D #3D1C9D

triadic

#1C3B9D #9D1C3B #3B9D1C

tetradic

#1C3B9D #9D1C7C #9D7E1C #1C9D3D

square

#1C3B9D #9D1C7C #9D7E1C #1C9D3D

split-complementary

#1C3B9D #9D3D1C #7C9D1C

monochromatic

#091435 #132769 #1C3B9D #254FD1 #5375E0

Accessibility & contrast

On white

9.71

#1C3B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1C3B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3B9D

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3B9D	#FFFFFF	#000000	##FFFFFF
##1C3B9D	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA0

Deuteranopia (green-blind)

#003E9B

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c3b9d;
/* rgb */ color: rgb(28, 59, 157);
/* oklch */ color: oklch(39.7% 0.163 265.6);

Tailwind

colors: {
  custom: {
    50: '#7070bb',
    500: '#1c3b9d',
    950: '#000000',
  },
}

SCSS

$custom: #1c3b9d;
$custom-light: #7070bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3b9d",
  "rgb": {
    "r": 28,
    "g": 59,
    "b": 157
  },
  "hsl": {
    "h": 225.581,
    "s": 69.73,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39733,
    "c": 0.16343,
    "h": 265.6
  },
  "luminance": 0.05809
}

Semantic roles & 50–950 ramp

primary

#1C3B9D

secondary

#C3A851

accent

#C23BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3B9D

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

Preview Lab → · Contrast checker → · Palette generator →