#1D3E9B#1D3E9B

#1D3E9B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.157 H 265.0°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E9B
RGB	rgb(29, 62, 155)
HSL	hsl(224, 68%, 36%)
HSV	hsv(224, 81%, 61%)
CMYK	cmyk(81.3%, 60%, 0%, 39.2%)
CIE-LAB	lab(29.59, 23.90, -54.01)
CIE-LCH	lch(29.59, 59.06, 293.87°)
OKLab	oklab(40.19% -0.0136 -0.1561)
OKLCH	oklch(40.19% 0.157 265)
XYZ	xyz(8.1436, 6.0721, 31.7468)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E9B #9B7A1D

analogous

#1D7D9B #1D3E9B #3B1D9B

triadic

#1D3E9B #9B1D3E #3E9B1D

tetradic

#1D3E9B #9B1D7D #9B7A1D #1D9B3B

square

#1D3E9B #9B1D7D #9B7A1D #1D9B3B

split-complementary

#1D3E9B #9B3B1D #7D9B1D

monochromatic

#0A1534 #132967 #1D3E9B #2753CF #5378DF

Accessibility & contrast

On white

9.48

#1D3E9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1D3E9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E9B

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E9B	#FFFFFF	#000000	##FFFFFF
##1D3E9B	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9E

Deuteranopia (green-blind)

#004099

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d3e9b;
/* rgb */ color: rgb(29, 62, 155);
/* oklch */ color: oklch(40.2% 0.157 265.0);

Tailwind

colors: {
  custom: {
    50: '#6f72b9',
    500: '#1d3e9b',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e9b;
$custom-light: #6f72b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e9b",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 155
  },
  "hsl": {
    "h": 224.286,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40189,
    "c": 0.15671,
    "h": 265
  },
  "luminance": 0.06073
}

Semantic roles & 50–950 ramp

primary

#1D3E9B

secondary

#C2A552

accent

#BE3CEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D3E9B

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

Preview Lab → · Contrast checker → · Palette generator →