#1C398A#1C398A

#1C398A is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.140 H 265.2°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#1C398A
RGB	rgb(28, 57, 138)
HSL	hsl(224, 66%, 33%)
HSV	hsv(224, 80%, 54%)
CMYK	cmyk(79.7%, 58.7%, 0%, 45.9%)
CIE-LAB	lab(26.76, 20.47, -48.20)
CIE-LCH	lch(26.76, 52.36, 293.01°)
OKLab	oklab(37.61% -0.0117 -0.1391)
OKLCH	oklch(37.61% 0.14 265.2)
XYZ	xyz(6.5278, 5.0074, 24.6623)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C398A #8A6D1C

analogous

#1C708A #1C398A #361C8A

triadic

#1C398A #8A1C39 #398A1C

tetradic

#1C398A #8A1C70 #8A6D1C #1C8A36

square

#1C398A #8A1C70 #8A6D1C #1C8A36

split-complementary

#1C398A #8A361C #708A1C

monochromatic

#070F24 #122457 #1C398A #264EBD #476DDA

Accessibility & contrast

On white

10.49

#1C398A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1C398A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C398A

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C398A	#FFFFFF	#000000	##FFFFFF
##1C398A	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458D

Deuteranopia (green-blind)

#003A88

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1c398a;
/* rgb */ color: rgb(28, 57, 138);
/* oklch */ color: oklch(37.6% 0.140 265.2);

Tailwind

colors: {
  custom: {
    50: '#6b6ead',
    500: '#1c398a',
    950: '#000000',
  },
}

SCSS

$custom: #1c398a;
$custom-light: #6b6ead;
$custom-dark: #000000;

JSON

{
  "hex": "#1c398a",
  "rgb": {
    "r": 28,
    "g": 57,
    "b": 138
  },
  "hsl": {
    "h": 224.182,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37609,
    "c": 0.13964,
    "h": 265.2
  },
  "luminance": 0.05008
}

Semantic roles & 50–950 ramp

primary

#1C398A

secondary

#BB9D46

accent

#BC3FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1C398A

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

Preview Lab → · Contrast checker → · Palette generator →