#1C3B9F#1C3B9F

#1C3B9F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.166 H 265.7°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#1C3B9F
RGB	rgb(28, 59, 159)
HSL	hsl(226, 70%, 37%)
HSV	hsv(226, 82%, 62%)
CMYK	cmyk(82.4%, 62.9%, 0%, 37.6%)
CIE-LAB	lab(29.10, 27.42, -57.25)
CIE-LCH	lch(29.10, 63.48, 295.59°)
OKLab	oklab(39.92% -0.0124 -0.1657)
OKLCH	oklch(39.92% 0.166 265.7)
XYZ	xyz(8.2987, 5.8770, 33.4912)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3B9F #9F801C

analogous

#1C7C9F #1C3B9F #3F1C9F

triadic

#1C3B9F #9F1C3B #3B9F1C

tetradic

#1C3B9F #9F1C7C #9F801C #1C9F3F

square

#1C3B9F #9F1C7C #9F801C #1C9F3F

split-complementary

#1C3B9F #9F3F1C #7C9F1C

monochromatic

#0A1437 #13286B #1C3B9F #254ED3 #5476E1

Accessibility & contrast

On white

9.65

#1C3B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1C3B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3B9F

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3B9F	#FFFFFF	#000000	##FFFFFF
##1C3B9F	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)

#004BA2

Deuteranopia (green-blind)

#003F9D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c3b9f;
/* rgb */ color: rgb(28, 59, 159);
/* oklch */ color: oklch(39.9% 0.166 265.7);

Tailwind

colors: {
  custom: {
    50: '#7070bc',
    500: '#1c3b9f',
    950: '#000000',
  },
}

SCSS

$custom: #1c3b9f;
$custom-light: #7070bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3b9f",
  "rgb": {
    "r": 28,
    "g": 59,
    "b": 159
  },
  "hsl": {
    "h": 225.802,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39919,
    "c": 0.16613,
    "h": 265.7
  },
  "luminance": 0.05878
}

Semantic roles & 50–950 ramp

primary

#1C3B9F

secondary

#C4A953

accent

#C33BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3B9F

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

Preview Lab → · Contrast checker → · Palette generator →