#1D308C#1D308C

#1D308C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.154 H 268.2°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#1D308C
RGB	rgb(29, 48, 140)
HSL	hsl(230, 66%, 33%)
HSV	hsv(230, 79%, 55%)
CMYK	cmyk(79.3%, 65.7%, 0%, 45.1%)
CIE-LAB	lab(24.54, 27.57, -53.06)
CIE-LCH	lch(24.54, 59.79, 297.46°)
OKLab	oklab(36.03% -0.0048 -0.1535)
OKLCH	oklch(36.03% 0.154 268.2)
XYZ	xyz(6.2956, 4.2679, 25.2978)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D308C #8C791D

analogous

#1D678C #1D308C #421D8C

triadic

#1D308C #8C1D30 #308C1D

tetradic

#1D308C #8C1D67 #8C791D #1D8C42

square

#1D308C #8C1D67 #8C791D #1D8C42

split-complementary

#1D308C #8C421D #678C1D

monochromatic

#080D27 #121F59 #1D308C #2841BF #4A62D9

Accessibility & contrast

On white

11.33

#1D308C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1D308C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D308C

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D308C	#FFFFFF	#000000	##FFFFFF
##1D308C	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	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: #1d308c;
/* rgb */ color: rgb(29, 48, 140);
/* oklch */ color: oklch(36.0% 0.154 268.2);

Tailwind

colors: {
  custom: {
    50: '#6c68ae',
    500: '#1d308c',
    950: '#000000',
  },
}

SCSS

$custom: #1d308c;
$custom-light: #6c68ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d308c",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 140
  },
  "hsl": {
    "h": 229.73,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.36027,
    "c": 0.15358,
    "h": 268.2
  },
  "luminance": 0.04269
}

Semantic roles & 50–950 ramp

primary

#1D308C

secondary

#BCA849

accent

#CC3FE9

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D308C

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

Preview Lab → · Contrast checker → · Palette generator →