#1C3B99#1C3B99

#1C3B99 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.4% C 0.158 H 265.5°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#1C3B99
RGB	rgb(28, 59, 153)
HSL	hsl(225, 69%, 35%)
HSV	hsv(225, 82%, 60%)
CMYK	cmyk(81.7%, 61.4%, 0%, 40%)
CIE-LAB	lab(28.57, 25.06, -54.46)
CIE-LCH	lch(28.57, 59.95, 294.71°)
OKLab	oklab(39.37% -0.0125 -0.1575)
OKLCH	oklch(39.37% 0.158 265.5)
XYZ	xyz(7.7906, 5.6738, 30.8154)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3B99 #997A1C

analogous

#1C7999 #1C3B99 #3B1C99

triadic

#1C3B99 #991C3B #3B991C

tetradic

#1C3B99 #991C79 #997A1C #1C993B

square

#1C3B99 #991C79 #997A1C #1C993B

split-complementary

#1C3B99 #993B1C #79991C

monochromatic

#091332 #132765 #1C3B99 #254FCD #5074DF

Accessibility & contrast

On white

9.84

#1C3B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1C3B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3B99

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3B99	#FFFFFF	#000000	##FFFFFF
##1C3B99	1.00	9.84	2.14	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c3b99;
/* rgb */ color: rgb(28, 59, 153);
/* oklch */ color: oklch(39.4% 0.158 265.5);

Tailwind

colors: {
  custom: {
    50: '#6f70b8',
    500: '#1c3b99',
    950: '#000000',
  },
}

SCSS

$custom: #1c3b99;
$custom-light: #6f70b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3b99",
  "rgb": {
    "r": 28,
    "g": 59,
    "b": 153
  },
  "hsl": {
    "h": 225.12,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39365,
    "c": 0.15798,
    "h": 265.5
  },
  "luminance": 0.05675
}

Semantic roles & 50–950 ramp

primary

#1C3B99

secondary

#C2A54F

accent

#C03CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1C3B99

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

Preview Lab → · Contrast checker → · Palette generator →