#1C3A9B#1C3A9B

#1C3A9B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.4% C 0.162 H 265.8°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#1C3A9B
RGB	rgb(28, 58, 155)
HSL	hsl(226, 69%, 36%)
HSV	hsv(226, 82%, 61%)
CMYK	cmyk(81.9%, 62.6%, 0%, 39.2%)
CIE-LAB	lab(28.48, 26.53, -55.83)
CIE-LCH	lch(28.48, 61.81, 295.42°)
OKLab	oklab(39.35% -0.0119 -0.1615)
OKLCH	oklch(39.35% 0.162 265.8)
XYZ	xyz(7.9063, 5.6386, 31.6757)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3A9B #9B7D1C

analogous

#1C799B #1C3A9B #3D1C9B

triadic

#1C3A9B #9B1C3A #3A9B1C

tetradic

#1C3A9B #9B1C79 #9B7D1C #1C9B3D

square

#1C3A9B #9B1C79 #9B7D1C #1C9B3D

split-complementary

#1C3A9B #9B3D1C #799B1C

monochromatic

#091333 #132767 #1C3A9B #254DCF #5273E0

Accessibility & contrast

On white

9.87

#1C3A9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1C3A9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3A9B

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3A9B	#FFFFFF	#000000	##FFFFFF
##1C3A9B	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499E

Deuteranopia (green-blind)

#003D99

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c3a9b;
/* rgb */ color: rgb(28, 58, 155);
/* oklch */ color: oklch(39.4% 0.162 265.8);

Tailwind

colors: {
  custom: {
    50: '#6f6fb9',
    500: '#1c3a9b',
    950: '#000000',
  },
}

SCSS

$custom: #1c3a9b;
$custom-light: #6f6fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3a9b",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 155
  },
  "hsl": {
    "h": 225.827,
    "s": 69.399,
    "l": 35.882
  },
  "oklch": {
    "l": 0.3935,
    "c": 0.16195,
    "h": 265.8
  },
  "luminance": 0.0564
}

Semantic roles & 50–950 ramp

primary

#1C3A9B

secondary

#C3A850

accent

#C23CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3A9B

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

Preview Lab → · Contrast checker → · Palette generator →