#1C308A#1C308A

#1C308A is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.8% C 0.151 H 267.9°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#1C308A
RGB	rgb(28, 48, 138)
HSL	hsl(229, 66%, 33%)
HSV	hsv(229, 80%, 54%)
CMYK	cmyk(79.7%, 65.2%, 0%, 45.9%)
CIE-LAB	lab(24.31, 26.69, -52.20)
CIE-LCH	lch(24.31, 58.62, 297.08°)
OKLab	oklab(35.79% -0.0056 -0.151)
OKLCH	oklch(35.79% 0.151 267.9)
XYZ	xyz(6.1217, 4.1951, 24.5269)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C308A #8A761C

analogous

#1C678A #1C308A #3F1C8A

triadic

#1C308A #8A1C30 #308A1C

tetradic

#1C308A #8A1C67 #8A761C #1C8A3F

square

#1C308A #8A1C67 #8A761C #1C8A3F

split-complementary

#1C308A #8A3F1C #678A1C

monochromatic

#070D24 #121E57 #1C308A #2642BD #4761DA

Accessibility & contrast

On white

11.42

#1C308A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1C308A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C308A

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C308A	#FFFFFF	#000000	##FFFFFF
##1C308A	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8D

Deuteranopia (green-blind)

#003588

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c308a;
/* rgb */ color: rgb(28, 48, 138);
/* oklch */ color: oklch(35.8% 0.151 267.9);

Tailwind

colors: {
  custom: {
    50: '#6c68ad',
    500: '#1c308a',
    950: '#000000',
  },
}

SCSS

$custom: #1c308a;
$custom-light: #6c68ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c308a",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 138
  },
  "hsl": {
    "h": 229.091,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35786,
    "c": 0.1511,
    "h": 267.9
  },
  "luminance": 0.04196
}

Semantic roles & 50–950 ramp

primary

#1C308A

secondary

#BBA646

accent

#CA3FE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1C308A

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

Preview Lab → · Contrast checker → · Palette generator →