#1C287C#1C287C

#1C287C is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.9% C 0.142 H 270.1°. Best body text is #FFFFFF at 12.77:1 contrast (WCAG AA passes).

Color values

HEX	#1C287C
RGB	rgb(28, 40, 124)
HSL	hsl(233, 63%, 30%)
HSV	hsv(233, 77%, 49%)
CMYK	cmyk(77.4%, 67.7%, 0%, 51.4%)
CIE-LAB	lab(20.90, 26.71, -48.97)
CIE-LCH	lch(20.90, 55.78, 298.61°)
OKLab	oklab(32.88% 0.0001 -0.1416)
OKLCH	oklch(32.88% 0.142 270.1)
XYZ	xyz(4.8745, 3.2192, 19.4293)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C287C #7C701C

analogous

#1C587C #1C287C #401C7C

triadic

#1C287C #7C1C28 #287C1C

tetradic

#1C287C #7C1C58 #7C701C #1C7C40

square

#1C287C #7C1C58 #7C701C #1C7C40

split-complementary

#1C287C #7C401C #587C1C

monochromatic

#060819 #11184A #1C287C #2738AE #3F51D4

Accessibility & contrast

On white

12.77

#1C287C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1C287C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C287C

12.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C287C	#FFFFFF	#000000	##FFFFFF
##1C287C	1.00	12.77	1.64	12.77
#FFFFFF	12.77	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377F

Deuteranopia (green-blind)

#002E7A

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1c287c;
/* rgb */ color: rgb(28, 40, 124);
/* oklch */ color: oklch(32.9% 0.142 270.1);

Tailwind

colors: {
  custom: {
    50: '#6962a3',
    500: '#1c287c',
    950: '#000000',
  },
}

SCSS

$custom: #1c287c;
$custom-light: #6962a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c287c",
  "rgb": {
    "r": 28,
    "g": 40,
    "b": 124
  },
  "hsl": {
    "h": 232.5,
    "s": 63.158,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32878,
    "c": 0.14164,
    "h": 270.1
  },
  "luminance": 0.0322
}

Semantic roles & 50–950 ramp

primary

#1C287C

secondary

#B0A244

accent

#D242E6

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C287C

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

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