#1D308A#1D308A

#1D308A is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.8% C 0.151 H 268.2°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#1D308A
RGB	rgb(29, 48, 138)
HSL	hsl(230, 65%, 33%)
HSV	hsv(230, 79%, 54%)
CMYK	cmyk(79%, 65.2%, 0%, 45.9%)
CIE-LAB	lab(24.35, 26.80, -52.12)
CIE-LCH	lch(24.35, 58.60, 297.21°)
OKLab	oklab(35.83% -0.0047 -0.1508)
OKLCH	oklch(35.83% 0.151 268.2)
XYZ	xyz(6.1495, 4.2094, 24.5282)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D308A #8A771D

analogous

#1D678A #1D308A #401D8A

triadic

#1D308A #8A1D30 #308A1D

tetradic

#1D308A #8A1D67 #8A771D #1D8A40

square

#1D308A #8A1D67 #8A771D #1D8A40

split-complementary

#1D308A #8A401D #678A1D

monochromatic

#080D25 #121E57 #1D308A #2842BD #4962D9

Accessibility & contrast

On white

11.40

#1D308A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1D308A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D308A

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D308A	#FFFFFF	#000000	##FFFFFF
##1D308A	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	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: #1d308a;
/* rgb */ color: rgb(29, 48, 138);
/* oklch */ color: oklch(35.8% 0.151 268.2);

Tailwind

colors: {
  custom: {
    50: '#6c68ad',
    500: '#1d308a',
    950: '#000000',
  },
}

SCSS

$custom: #1d308a;
$custom-light: #6c68ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d308a",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 138
  },
  "hsl": {
    "h": 229.541,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35833,
    "c": 0.15083,
    "h": 268.2
  },
  "luminance": 0.0421
}

Semantic roles & 50–950 ramp

primary

#1D308A

secondary

#BBA748

accent

#CB40E8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D308A

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

Preview Lab → · Contrast checker → · Palette generator →