#1C389F#1C389F

#1C389F is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.170 H 266.4°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#1C389F
RGB	rgb(28, 56, 159)
HSL	hsl(227, 70%, 37%)
HSV	hsv(227, 82%, 62%)
CMYK	cmyk(82.4%, 64.8%, 0%, 37.6%)
CIE-LAB	lab(28.32, 29.44, -58.52)
CIE-LCH	lch(28.32, 65.51, 296.70°)
OKLab	oklab(39.34% -0.0108 -0.1694)
OKLCH	oklch(39.34% 0.17 266.4)
XYZ	xyz(8.1489, 5.5775, 33.4412)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C389F #9F831C

analogous

#1C799F #1C389F #421C9F

triadic

#1C389F #9F1C38 #389F1C

tetradic

#1C389F #9F1C79 #9F831C #1C9F42

square

#1C389F #9F1C79 #9F831C #1C9F42

split-complementary

#1C389F #9F421C #799F1C

monochromatic

#0A1337 #13266B #1C389F #254AD3 #5472E1

Accessibility & contrast

On white

9.93

#1C389F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1C389F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C389F

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C389F	#FFFFFF	#000000	##FFFFFF
##1C389F	1.00	9.93	2.12	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A2

Deuteranopia (green-blind)

#003D9D

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c389f;
/* rgb */ color: rgb(28, 56, 159);
/* oklch */ color: oklch(39.3% 0.170 266.4);

Tailwind

colors: {
  custom: {
    50: '#716ebc',
    500: '#1c389f',
    950: '#000000',
  },
}

SCSS

$custom: #1c389f;
$custom-light: #716ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c389f",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 159
  },
  "hsl": {
    "h": 227.176,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39342,
    "c": 0.16978,
    "h": 266.4
  },
  "luminance": 0.05578
}

Semantic roles & 50–950 ramp

primary

#1C389F

secondary

#C4AC53

accent

#C73BED

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C389F

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

Preview Lab → · Contrast checker → · Palette generator →