#1D307A#1D307A

#1D307A is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.128 H 267.9°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#1D307A
RGB	rgb(29, 48, 122)
HSL	hsl(228, 62%, 30%)
HSV	hsv(228, 76%, 48%)
CMYK	cmyk(76.2%, 60.7%, 0%, 52.2%)
CIE-LAB	lab(22.93, 20.48, -44.39)
CIE-LCH	lch(22.93, 48.89, 294.77°)
OKLab	oklab(34.34% -0.0046 -0.1281)
OKLCH	oklch(34.34% 0.128 267.9)
XYZ	xyz(5.0753, 3.7797, 18.8707)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D307A #7A671D

analogous

#1D5F7A #1D307A #391D7A

triadic

#1D307A #7A1D30 #307A1D

tetradic

#1D307A #7A1D5F #7A671D #1D7A39

square

#1D307A #7A1D5F #7A671D #1D7A39

split-complementary

#1D307A #7A391D #5F7A1D

monochromatic

#060A19 #111D49 #1D307A #2943AB #405ED2

Accessibility & contrast

On white

11.96

#1D307A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1D307A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D307A

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D307A	#FFFFFF	#000000	##FFFFFF
##1D307A	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7C

Deuteranopia (green-blind)

#003379

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d307a;
/* rgb */ color: rgb(29, 48, 122);
/* oklch */ color: oklch(34.3% 0.128 267.9);

Tailwind

colors: {
  custom: {
    50: '#6868a1',
    500: '#1d307a',
    950: '#000000',
  },
}

SCSS

$custom: #1d307a;
$custom-light: #6868a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d307a",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 122
  },
  "hsl": {
    "h": 227.742,
    "s": 61.589,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34336,
    "c": 0.12816,
    "h": 267.9
  },
  "luminance": 0.0378
}

Semantic roles & 50–950 ramp

primary

#1D307A

secondary

#AE9845

accent

#C443E5

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D307A

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

Preview Lab → · Contrast checker → · Palette generator →