#1D308D#1D308D

#1D308D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.155 H 268.2°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#1D308D
RGB	rgb(29, 48, 141)
HSL	hsl(230, 66%, 33%)
HSV	hsv(230, 79%, 55%)
CMYK	cmyk(79.4%, 66%, 0%, 44.7%)
CIE-LAB	lab(24.63, 27.96, -53.53)
CIE-LCH	lch(24.63, 60.39, 297.58°)
OKLab	oklab(36.12% -0.0048 -0.1549)
OKLCH	oklch(36.12% 0.155 268.2)
XYZ	xyz(6.3697, 4.2975, 25.6879)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D308D #8D7A1D

analogous

#1D688D #1D308D #421D8D

triadic

#1D308D #8D1D30 #308D1D

tetradic

#1D308D #8D1D68 #8D7A1D #1D8D42

square

#1D308D #8D1D68 #8D7A1D #1D8D42

split-complementary

#1D308D #8D421D #688D1D

monochromatic

#080D27 #131F5A #1D308D #2741C0 #4B63DA

Accessibility & contrast

On white

11.29

#1D308D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1D308D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D308D

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D308D	#FFFFFF	#000000	##FFFFFF
##1D308D	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004090

Deuteranopia (green-blind)

#00358B

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d308d;
/* rgb */ color: rgb(29, 48, 141);
/* oklch */ color: oklch(36.1% 0.155 268.2);

Tailwind

colors: {
  custom: {
    50: '#6d68af',
    500: '#1d308d',
    950: '#000000',
  },
}

SCSS

$custom: #1d308d;
$custom-light: #6d68af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d308d",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 141
  },
  "hsl": {
    "h": 229.821,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.36124,
    "c": 0.15494,
    "h": 268.2
  },
  "luminance": 0.04298
}

Semantic roles & 50–950 ramp

primary

#1D308D

secondary

#BCA94A

accent

#CC3FE9

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D308D

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

Preview Lab → · Contrast checker → · Palette generator →