#1D3D9B#1D3D9B

#1D3D9B is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.158 H 265.3°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D9B
RGB	rgb(29, 61, 155)
HSL	hsl(225, 68%, 36%)
HSV	hsv(225, 81%, 61%)
CMYK	cmyk(81.3%, 60.6%, 0%, 39.2%)
CIE-LAB	lab(29.32, 24.58, -54.45)
CIE-LCH	lch(29.32, 59.75, 294.30°)
OKLab	oklab(39.99% -0.0129 -0.1574)
OKLCH	oklch(39.99% 0.158 265.3)
XYZ	xyz(8.0897, 5.9643, 31.7289)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D9B #9B7B1D

analogous

#1D7C9B #1D3D9B #3C1D9B

triadic

#1D3D9B #9B1D3D #3D9B1D

tetradic

#1D3D9B #9B1D7C #9B7B1D #1D9B3C

square

#1D3D9B #9B1D7C #9B7B1D #1D9B3C

split-complementary

#1D3D9B #9B3C1D #7C9B1D

monochromatic

#0A1434 #132967 #1D3D9B #2751CF #5377DF

Accessibility & contrast

On white

9.58

#1D3D9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1D3D9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D9B

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D9B	#FFFFFF	#000000	##FFFFFF
##1D3D9B	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1d3d9b;
/* rgb */ color: rgb(29, 61, 155);
/* oklch */ color: oklch(40.0% 0.158 265.3);

Tailwind

colors: {
  custom: {
    50: '#6f72b9',
    500: '#1d3d9b',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d9b;
$custom-light: #6f72b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d9b",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 155
  },
  "hsl": {
    "h": 224.762,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39987,
    "c": 0.15796,
    "h": 265.3
  },
  "luminance": 0.05965
}

Semantic roles & 50–950 ramp

primary

#1D3D9B

secondary

#C2A652

accent

#BF3CEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3D9B

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

Preview Lab → · Contrast checker → · Palette generator →