#1C398C#1C398C

#1C398C is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.142 H 265.3°. Best body text is #FFFFFF at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#1C398C
RGB	rgb(28, 57, 140)
HSL	hsl(224, 67%, 33%)
HSV	hsv(224, 80%, 55%)
CMYK	cmyk(80%, 59.3%, 0%, 45.1%)
CIE-LAB	lab(26.92, 21.27, -49.17)
CIE-LCH	lch(26.92, 53.57, 293.40°)
OKLab	oklab(37.79% -0.0116 -0.142)
OKLCH	oklch(37.79% 0.142 265.3)
XYZ	xyz(6.6740, 5.0658, 25.4319)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C398C #8C6F1C

analogous

#1C718C #1C398C #371C8C

triadic

#1C398C #8C1C39 #398C1C

tetradic

#1C398C #8C1C71 #8C6F1C #1C8C37

square

#1C398C #8C1C71 #8C6F1C #1C8C37

split-complementary

#1C398C #8C371C #718C1C

monochromatic

#080F26 #122459 #1C398C #264EBF #486EDA

Accessibility & contrast

On white

10.43

#1C398C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1C398C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C398C

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C398C	#FFFFFF	#000000	##FFFFFF
##1C398C	1.00	10.43	2.01	10.43
#FFFFFF	10.43	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003B8A

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1c398c;
/* rgb */ color: rgb(28, 57, 140);
/* oklch */ color: oklch(37.8% 0.142 265.3);

Tailwind

colors: {
  custom: {
    50: '#6b6eae',
    500: '#1c398c',
    950: '#000000',
  },
}

SCSS

$custom: #1c398c;
$custom-light: #6b6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c398c",
  "rgb": {
    "r": 28,
    "g": 57,
    "b": 140
  },
  "hsl": {
    "h": 224.464,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37786,
    "c": 0.14246,
    "h": 265.3
  },
  "luminance": 0.05067
}

Semantic roles & 50–950 ramp

primary

#1C398C

secondary

#BC9E48

accent

#BD3EEA

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1C398C

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

Preview Lab → · Contrast checker → · Palette generator →