#1C398E#1C398E

#1C398E is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.0% C 0.145 H 265.5°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#1C398E
RGB	rgb(28, 57, 142)
HSL	hsl(225, 67%, 33%)
HSV	hsv(225, 80%, 56%)
CMYK	cmyk(80.3%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(27.09, 22.07, -50.13)
CIE-LCH	lch(27.09, 54.77, 293.76°)
OKLab	oklab(37.96% -0.0115 -0.1448)
OKLCH	oklch(37.96% 0.145 265.5)
XYZ	xyz(6.8228, 5.1253, 26.2156)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C398E #8E711C

analogous

#1C728E #1C398E #381C8E

triadic

#1C398E #8E1C39 #398E1C

tetradic

#1C398E #8E1C72 #8E711C #1C8E38

square

#1C398E #8E1C72 #8E711C #1C8E38

split-complementary

#1C398E #8E381C #728E1C

monochromatic

#081028 #12245B #1C398E #264EC1 #496EDB

Accessibility & contrast

On white

10.37

#1C398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1C398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C398E

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C398E	#FFFFFF	#000000	##FFFFFF
##1C398E	1.00	10.37	2.03	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1c398e;
/* rgb */ color: rgb(28, 57, 142);
/* oklch */ color: oklch(38.0% 0.145 265.5);

Tailwind

colors: {
  custom: {
    50: '#6c6eb0',
    500: '#1c398e',
    950: '#000000',
  },
}

SCSS

$custom: #1c398e;
$custom-light: #6c6eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c398e",
  "rgb": {
    "r": 28,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 224.737,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37963,
    "c": 0.14528,
    "h": 265.5
  },
  "luminance": 0.05126
}

Semantic roles & 50–950 ramp

primary

#1C398E

secondary

#BDA049

accent

#BE3EEA

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1C398E

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

Preview Lab → · Contrast checker → · Palette generator →