#1C399D#1C399D

#1C399D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.166 H 266.1°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#1C399D
RGB	rgb(28, 57, 157)
HSL	hsl(227, 70%, 36%)
HSV	hsv(227, 82%, 62%)
CMYK	cmyk(82.2%, 63.7%, 0%, 38.4%)
CIE-LAB	lab(28.40, 27.99, -57.18)
CIE-LCH	lch(28.40, 63.67, 296.08°)
OKLab	oklab(39.34% -0.0113 -0.1655)
OKLCH	oklch(39.34% 0.166 266.1)
XYZ	xyz(8.0257, 5.6065, 32.5509)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C399D #9D801C

analogous

#1C7A9D #1C399D #401C9D

triadic

#1C399D #9D1C39 #399D1C

tetradic

#1C399D #9D1C7A #9D801C #1C9D40

square

#1C399D #9D1C7A #9D801C #1C9D40

split-complementary

#1C399D #9D401C #7A9D1C

monochromatic

#091335 #132669 #1C399D #254CD1 #5373E0

Accessibility & contrast

On white

9.90

#1C399D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1C399D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C399D

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C399D	#FFFFFF	#000000	##FFFFFF
##1C399D	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A0

Deuteranopia (green-blind)

#003D9B

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c399d;
/* rgb */ color: rgb(28, 57, 157);
/* oklch */ color: oklch(39.3% 0.166 266.1);

Tailwind

colors: {
  custom: {
    50: '#706fbb',
    500: '#1c399d',
    950: '#000000',
  },
}

SCSS

$custom: #1c399d;
$custom-light: #706fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c399d",
  "rgb": {
    "r": 28,
    "g": 57,
    "b": 157
  },
  "hsl": {
    "h": 226.512,
    "s": 69.73,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39343,
    "c": 0.16588,
    "h": 266.1
  },
  "luminance": 0.05607
}

Semantic roles & 50–950 ramp

primary

#1C399D

secondary

#C3AA51

accent

#C53BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C399D

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

Preview Lab → · Contrast checker → · Palette generator →