#1C398D#1C398D

#1C398D is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.144 H 265.4°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#1C398D
RGB	rgb(28, 57, 141)
HSL	hsl(225, 67%, 33%)
HSV	hsv(225, 80%, 55%)
CMYK	cmyk(80.1%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(27.00, 21.67, -49.65)
CIE-LCH	lch(27.00, 54.17, 293.58°)
OKLab	oklab(37.87% -0.0115 -0.1434)
OKLCH	oklch(37.87% 0.144 265.4)
XYZ	xyz(6.7480, 5.0954, 25.8220)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C398D #8D701C

analogous

#1C718D #1C398D #371C8D

triadic

#1C398D #8D1C39 #398D1C

tetradic

#1C398D #8D1C71 #8D701C #1C8D37

square

#1C398D #8D1C71 #8D701C #1C8D37

split-complementary

#1C398D #8D371C #718D1C

monochromatic

#081027 #12245A #1C398D #264EC0 #496EDB

Accessibility & contrast

On white

10.40

#1C398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1C398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C398D

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C398D	#FFFFFF	#000000	##FFFFFF
##1C398D	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1c398d;
/* rgb */ color: rgb(28, 57, 141);
/* oklch */ color: oklch(37.9% 0.144 265.4);

Tailwind

colors: {
  custom: {
    50: '#6c6eaf',
    500: '#1c398d',
    950: '#000000',
  },
}

SCSS

$custom: #1c398d;
$custom-light: #6c6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1c398d",
  "rgb": {
    "r": 28,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 224.602,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37874,
    "c": 0.14387,
    "h": 265.4
  },
  "luminance": 0.05096
}

Semantic roles & 50–950 ramp

primary

#1C398D

secondary

#BD9F48

accent

#BE3EEA

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1C398D

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

Preview Lab → · Contrast checker → · Palette generator →