#1D307D#1D307D

#1D307D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.6% C 0.133 H 268.0°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D307D
RGB	rgb(29, 48, 125)
HSL	hsl(228, 62%, 30%)
HSV	hsv(228, 77%, 49%)
CMYK	cmyk(76.8%, 61.6%, 0%, 51%)
CIE-LAB	lab(23.19, 21.68, -45.87)
CIE-LCH	lch(23.19, 50.73, 295.30°)
OKLab	oklab(34.61% -0.0045 -0.1324)
OKLCH	oklch(34.61% 0.133 268)
XYZ	xyz(5.2640, 3.8552, 19.8648)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D307D #7D6A1D

analogous

#1D607D #1D307D #3A1D7D

triadic

#1D307D #7D1D30 #307D1D

tetradic

#1D307D #7D1D60 #7D6A1D #1D7D3A

square

#1D307D #7D1D60 #7D6A1D #1D7D3A

split-complementary

#1D307D #7D3A1D #607D1D

monochromatic

#060A1A #111D4B #1D307D #2943AF #415ED3

Accessibility & contrast

On white

11.86

#1D307D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1D307D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D307D

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D307D	#FFFFFF	#000000	##FFFFFF
##1D307D	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C80

Deuteranopia (green-blind)

#00337C

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d307d;
/* rgb */ color: rgb(29, 48, 125);
/* oklch */ color: oklch(34.6% 0.133 268.0);

Tailwind

colors: {
  custom: {
    50: '#6868a3',
    500: '#1d307d',
    950: '#000000',
  },
}

SCSS

$custom: #1d307d;
$custom-light: #6868a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d307d",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 125
  },
  "hsl": {
    "h": 228.125,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.34609,
    "c": 0.13251,
    "h": 268
  },
  "luminance": 0.03856
}

Semantic roles & 50–950 ramp

primary

#1D307D

secondary

#B19B45

accent

#C542E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D307D

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

Preview Lab → · Contrast checker → · Palette generator →