#1C3F89#1C3F89

#1C3F89 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.130 H 262.8°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#1C3F89
RGB	rgb(28, 63, 137)
HSL	hsl(221, 66%, 32%)
HSV	hsv(221, 80%, 54%)
CMYK	cmyk(79.6%, 54%, 0%, 46.3%)
CIE-LAB	lab(28.40, 15.89, -44.91)
CIE-LCH	lch(28.40, 47.64, 289.48°)
OKLab	oklab(38.83% -0.0163 -0.1294)
OKLCH	oklch(38.83% 0.13 262.8)
XYZ	xyz(6.7701, 5.6073, 24.3876)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3F89 #89661C

analogous

#1C7689 #1C3F89 #2F1C89

triadic

#1C3F89 #891C3F #3F891C

tetradic

#1C3F89 #891C76 #89661C #1C892F

square

#1C3F89 #891C76 #89661C #1C892F

split-complementary

#1C3F89 #892F1C #76891C

monochromatic

#071023 #122856 #1C3F89 #2656BC #4675D9

Accessibility & contrast

On white

9.90

#1C3F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1C3F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3F89

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3F89	#FFFFFF	#000000	##FFFFFF
##1C3F89	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09488C

Deuteranopia (green-blind)

#003E88

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c3f89;
/* rgb */ color: rgb(28, 63, 137);
/* oklch */ color: oklch(38.8% 0.130 262.8);

Tailwind

colors: {
  custom: {
    50: '#6a73ac',
    500: '#1c3f89',
    950: '#000000',
  },
}

SCSS

$custom: #1c3f89;
$custom-light: #6a73ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3f89",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 137
  },
  "hsl": {
    "h": 220.734,
    "s": 66.061,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38826,
    "c": 0.1304,
    "h": 262.8
  },
  "luminance": 0.05608
}

Semantic roles & 50–950 ramp

primary

#1C3F89

secondary

#BB9546

accent

#B23FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1C3F89

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

Preview Lab → · Contrast checker → · Palette generator →