#1C3D99#1C3D99

#1C3D99 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.155 H 264.9°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#1C3D99
RGB	rgb(28, 61, 153)
HSL	hsl(224, 69%, 35%)
HSV	hsv(224, 82%, 60%)
CMYK	cmyk(81.7%, 60.1%, 0%, 40%)
CIE-LAB	lab(29.12, 23.70, -53.57)
CIE-LCH	lch(29.12, 58.58, 293.86°)
OKLab	oklab(39.77% -0.0137 -0.1549)
OKLCH	oklch(39.77% 0.155 264.9)
XYZ	xyz(7.8954, 5.8833, 30.8503)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3D99 #99781C

analogous

#1C7B99 #1C3D99 #391C99

triadic

#1C3D99 #991C3D #3D991C

tetradic

#1C3D99 #991C7B #99781C #1C9939

square

#1C3D99 #991C7B #99781C #1C9939

split-complementary

#1C3D99 #99391C #7B991C

monochromatic

#091432 #132865 #1C3D99 #2552CD #5076DF

Accessibility & contrast

On white

9.65

#1C3D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1C3D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3D99

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3D99	#FFFFFF	#000000	##FFFFFF
##1C3D99	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c3d99;
/* rgb */ color: rgb(28, 61, 153);
/* oklch */ color: oklch(39.8% 0.155 264.9);

Tailwind

colors: {
  custom: {
    50: '#6e72b8',
    500: '#1c3d99',
    950: '#000000',
  },
}

SCSS

$custom: #1c3d99;
$custom-light: #6e72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3d99",
  "rgb": {
    "r": 28,
    "g": 61,
    "b": 153
  },
  "hsl": {
    "h": 224.16,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.3977,
    "c": 0.15547,
    "h": 264.9
  },
  "luminance": 0.05884
}

Semantic roles & 50–950 ramp

primary

#1C3D99

secondary

#C2A34F

accent

#BD3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1C3D99

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

Preview Lab → · Contrast checker → · Palette generator →