#1C2883#1C2883

#1C2883 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.6% C 0.151 H 269.8°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#1C2883
RGB	rgb(28, 40, 131)
HSL	hsl(233, 65%, 31%)
HSV	hsv(233, 79%, 51%)
CMYK	cmyk(78.6%, 69.5%, 0%, 48.6%)
CIE-LAB	lab(21.59, 29.40, -52.27)
CIE-LCH	lch(21.59, 59.97, 299.35°)
OKLab	oklab(33.59% -0.0004 -0.1513)
OKLCH	oklch(33.59% 0.151 269.8)
XYZ	xyz(5.3330, 3.4026, 21.8440)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2883 #83771C

analogous

#1C5B83 #1C2883 #431C83

triadic

#1C2883 #831C28 #28831C

tetradic

#1C2883 #831C5B #83771C #1C8343

square

#1C2883 #831C5B #83771C #1C8343

split-complementary

#1C2883 #83431C #5B831C

monochromatic

#06091E #111951 #1C2883 #2737B5 #4354D7

Accessibility & contrast

On white

12.50

#1C2883 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1C2883 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2883

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2883	#FFFFFF	#000000	##FFFFFF
##1C2883	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003986

Deuteranopia (green-blind)

#002F81

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c2883;
/* rgb */ color: rgb(28, 40, 131);
/* oklch */ color: oklch(33.6% 0.151 269.8);

Tailwind

colors: {
  custom: {
    50: '#6a62a8',
    500: '#1c2883',
    950: '#000000',
  },
}

SCSS

$custom: #1c2883;
$custom-light: #6a62a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2883",
  "rgb": {
    "r": 28,
    "g": 40,
    "b": 131
  },
  "hsl": {
    "h": 233.01,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.3359,
    "c": 0.15128,
    "h": 269.8
  },
  "luminance": 0.03403
}

Semantic roles & 50–950 ramp

primary

#1C2883

secondary

#B6A945

accent

#D440E8

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1C2883

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

Preview Lab → · Contrast checker → · Palette generator →