#1D3C9B#1D3C9B

#1D3C9B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.159 H 265.6°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D3C9B
RGB	rgb(29, 60, 155)
HSL	hsl(225, 68%, 36%)
HSV	hsv(225, 81%, 61%)
CMYK	cmyk(81.3%, 61.3%, 0%, 39.2%)
CIE-LAB	lab(29.05, 25.27, -54.89)
CIE-LCH	lch(29.05, 60.43, 294.72°)
OKLab	oklab(39.79% -0.0123 -0.1587)
OKLCH	oklch(39.79% 0.159 265.6)
XYZ	xyz(8.0369, 5.8585, 31.7112)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3C9B #9B7C1D

analogous

#1D7B9B #1D3C9B #3D1D9B

triadic

#1D3C9B #9B1D3C #3C9B1D

tetradic

#1D3C9B #9B1D7B #9B7C1D #1D9B3D

square

#1D3C9B #9B1D7B #9B7C1D #1D9B3D

split-complementary

#1D3C9B #9B3D1D #7B9B1D

monochromatic

#0A1434 #132867 #1D3C9B #2750CF #5376DF

Accessibility & contrast

On white

9.67

#1D3C9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1D3C9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3C9B

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3C9B	#FFFFFF	#000000	##FFFFFF
##1D3C9B	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d3c9b;
/* rgb */ color: rgb(29, 60, 155);
/* oklch */ color: oklch(39.8% 0.159 265.6);

Tailwind

colors: {
  custom: {
    50: '#6f71b9',
    500: '#1d3c9b',
    950: '#000000',
  },
}

SCSS

$custom: #1d3c9b;
$custom-light: #6f71b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3c9b",
  "rgb": {
    "r": 29,
    "g": 60,
    "b": 155
  },
  "hsl": {
    "h": 225.238,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39786,
    "c": 0.15922,
    "h": 265.6
  },
  "luminance": 0.05859
}

Semantic roles & 50–950 ramp

primary

#1D3C9B

secondary

#C2A652

accent

#C03CEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3C9B

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

Preview Lab → · Contrast checker → · Palette generator →