#1C308C#1C308C

#1C308C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.154 H 267.9°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#1C308C
RGB	rgb(28, 48, 140)
HSL	hsl(229, 67%, 33%)
HSV	hsv(229, 80%, 55%)
CMYK	cmyk(80%, 65.7%, 0%, 45.1%)
CIE-LAB	lab(24.49, 27.47, -53.14)
CIE-LCH	lch(24.49, 59.82, 297.34°)
OKLab	oklab(35.98% -0.0057 -0.1537)
OKLCH	oklch(35.98% 0.154 267.9)
XYZ	xyz(6.2678, 4.2535, 25.2965)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C308C #8C781C

analogous

#1C688C #1C308C #401C8C

triadic

#1C308C #8C1C30 #308C1C

tetradic

#1C308C #8C1C68 #8C781C #1C8C40

square

#1C308C #8C1C68 #8C781C #1C8C40

split-complementary

#1C308C #8C401C #688C1C

monochromatic

#080D26 #121F59 #1C308C #2641BF #4862DA

Accessibility & contrast

On white

11.35

#1C308C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1C308C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C308C

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C308C	#FFFFFF	#000000	##FFFFFF
##1C308C	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408F

Deuteranopia (green-blind)

#00358A

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c308c;
/* rgb */ color: rgb(28, 48, 140);
/* oklch */ color: oklch(36.0% 0.154 267.9);

Tailwind

colors: {
  custom: {
    50: '#6c68ae',
    500: '#1c308c',
    950: '#000000',
  },
}

SCSS

$custom: #1c308c;
$custom-light: #6c68ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c308c",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 140
  },
  "hsl": {
    "h": 229.286,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35981,
    "c": 0.15385,
    "h": 267.9
  },
  "luminance": 0.04254
}

Semantic roles & 50–950 ramp

primary

#1C308C

secondary

#BCA748

accent

#CB3EEA

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1C308C

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

Preview Lab → · Contrast checker → · Palette generator →