#1C2B83#1C2B83

#1C2B83 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.1% C 0.148 H 269.1°. Best body text is #FFFFFF at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#1C2B83
RGB	rgb(28, 43, 131)
HSL	hsl(231, 65%, 31%)
HSV	hsv(231, 79%, 51%)
CMYK	cmyk(78.6%, 67.2%, 0%, 48.6%)
CIE-LAB	lab(22.35, 27.38, -51.03)
CIE-LCH	lch(22.35, 57.91, 298.21°)
OKLab	oklab(34.14% -0.0022 -0.1476)
OKLCH	oklch(34.14% 0.148 269.1)
XYZ	xyz(5.4381, 3.6127, 21.8791)
Luminance	0.0361 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2B83 #83741C

analogous

#1C5E83 #1C2B83 #401C83

triadic

#1C2B83 #831C2B #2B831C

tetradic

#1C2B83 #831C5E #83741C #1C8340

square

#1C2B83 #831C5E #83741C #1C8340

split-complementary

#1C2B83 #83401C #5E831C

monochromatic

#060A1E #111A51 #1C2B83 #273CB5 #4358D7

Accessibility & contrast

On white

12.19

#1C2B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1C2B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2B83

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2B83	#FFFFFF	#000000	##FFFFFF
##1C2B83	1.00	12.19	1.72	12.19
#FFFFFF	12.19	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A86

Deuteranopia (green-blind)

#003181

Tritanopia (blue-blind)

#004253

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1c2b83;
/* rgb */ color: rgb(28, 43, 131);
/* oklch */ color: oklch(34.1% 0.148 269.1);

Tailwind

colors: {
  custom: {
    50: '#6a64a8',
    500: '#1c2b83',
    950: '#000000',
  },
}

SCSS

$custom: #1c2b83;
$custom-light: #6a64a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2b83",
  "rgb": {
    "r": 28,
    "g": 43,
    "b": 131
  },
  "hsl": {
    "h": 231.262,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.34144,
    "c": 0.14764,
    "h": 269.1
  },
  "luminance": 0.03613
}

Semantic roles & 50–950 ramp

primary

#1C2B83

secondary

#B6A645

accent

#CF40E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080510

muted

#7A7A7F

Preview Lab

Preview with #1C2B83

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

Preview Lab → · Contrast checker → · Palette generator →