#1D3A7F#1D3A7F

#1D3A7F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.122 H 264.1°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A7F
RGB	rgb(29, 58, 127)
HSL	hsl(222, 63%, 31%)
HSV	hsv(222, 77%, 50%)
CMYK	cmyk(77.2%, 54.3%, 0%, 50.2%)
CIE-LAB	lab(26.21, 15.45, -42.21)
CIE-LCH	lch(26.21, 44.95, 290.11°)
OKLab	oklab(36.94% -0.0125 -0.1215)
OKLCH	oklch(36.94% 0.122 264.1)
XYZ	xyz(5.8492, 4.8190, 20.6964)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A7F #7F621D

analogous

#1D6B7F #1D3A7F #311D7F

triadic

#1D3A7F #7F1D3A #3A7F1D

tetradic

#1D3A7F #7F1D6B #7F621D #1D7F31

square

#1D3A7F #7F1D6B #7F621D #1D7F31

split-complementary

#1D3A7F #7F311D #6B7F1D

monochromatic

#060C1B #12234D #1D3A7F #2851B1 #426ED4

Accessibility & contrast

On white

10.69

#1D3A7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1D3A7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A7F

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A7F	#FFFFFF	#000000	##FFFFFF
##1D3A7F	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A4381

Deuteranopia (green-blind)

#003A7E

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d3a7f;
/* rgb */ color: rgb(29, 58, 127);
/* oklch */ color: oklch(36.9% 0.122 264.1);

Tailwind

colors: {
  custom: {
    50: '#686fa5',
    500: '#1d3a7f',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a7f;
$custom-light: #686fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a7f",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 127
  },
  "hsl": {
    "h": 222.245,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.36936,
    "c": 0.12215,
    "h": 264.1
  },
  "luminance": 0.0482
}

Semantic roles & 50–950 ramp

primary

#1D3A7F

secondary

#B29245

accent

#B542E6

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D3A7F

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

Preview Lab → · Contrast checker → · Palette generator →