#1C3A9D#1C3A9D

#1C3A9D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.165 H 265.9°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#1C3A9D
RGB	rgb(28, 58, 157)
HSL	hsl(226, 70%, 36%)
HSV	hsv(226, 82%, 62%)
CMYK	cmyk(82.2%, 63.1%, 0%, 38.4%)
CIE-LAB	lab(28.66, 27.31, -56.76)
CIE-LCH	lch(28.66, 62.99, 295.70°)
OKLab	oklab(39.54% -0.0118 -0.1642)
OKLCH	oklch(39.54% 0.165 265.9)
XYZ	xyz(8.0756, 5.7063, 32.5676)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3A9D #9D7F1C

analogous

#1C7B9D #1C3A9D #3F1C9D

triadic

#1C3A9D #9D1C3A #3A9D1C

tetradic

#1C3A9D #9D1C7B #9D7F1C #1C9D3F

square

#1C3A9D #9D1C7B #9D7F1C #1C9D3F

split-complementary

#1C3A9D #9D3F1C #7B9D1C

monochromatic

#091435 #132769 #1C3A9D #254DD1 #5374E0

Accessibility & contrast

On white

9.81

#1C3A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1C3A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3A9D

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3A9D	#FFFFFF	#000000	##FFFFFF
##1C3A9D	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	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: #1c3a9d;
/* rgb */ color: rgb(28, 58, 157);
/* oklch */ color: oklch(39.5% 0.165 265.9);

Tailwind

colors: {
  custom: {
    50: '#706fbb',
    500: '#1c3a9d',
    950: '#000000',
  },
}

SCSS

$custom: #1c3a9d;
$custom-light: #706fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3a9d",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 157
  },
  "hsl": {
    "h": 226.047,
    "s": 69.73,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39537,
    "c": 0.16466,
    "h": 265.9
  },
  "luminance": 0.05707
}

Semantic roles & 50–950 ramp

primary

#1C3A9D

secondary

#C3A951

accent

#C33BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3A9D

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

Preview Lab → · Contrast checker → · Palette generator →