#1D3E99#1D3E99

#1D3E99 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.154 H 264.9°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E99
RGB	rgb(29, 62, 153)
HSL	hsl(224, 68%, 36%)
HSV	hsv(224, 81%, 60%)
CMYK	cmyk(81%, 59.5%, 0%, 40%)
CIE-LAB	lab(29.43, 23.11, -53.07)
CIE-LCH	lch(29.43, 57.88, 293.53°)
OKLab	oklab(40.01% -0.0136 -0.1533)
OKLCH	oklch(40.01% 0.154 264.9)
XYZ	xyz(7.9771, 6.0054, 30.8696)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E99 #99781D

analogous

#1D7C99 #1D3E99 #3A1D99

triadic

#1D3E99 #991D3E #3E991D

tetradic

#1D3E99 #991D7C #99781D #1D993A

square

#1D3E99 #991D7C #99781D #1D993A

split-complementary

#1D3E99 #993A1D #7C991D

monochromatic

#091432 #132966 #1D3E99 #2753CC #5277DE

Accessibility & contrast

On white

9.54

#1D3E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1D3E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E99

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E99	#FFFFFF	#000000	##FFFFFF
##1D3E99	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#004097

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1d3e99;
/* rgb */ color: rgb(29, 62, 153);
/* oklch */ color: oklch(40.0% 0.154 264.9);

Tailwind

colors: {
  custom: {
    50: '#6f72b8',
    500: '#1d3e99',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e99;
$custom-light: #6f72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e99",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 153
  },
  "hsl": {
    "h": 224.032,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40012,
    "c": 0.15395,
    "h": 264.9
  },
  "luminance": 0.06006
}

Semantic roles & 50–950 ramp

primary

#1D3E99

secondary

#C1A351

accent

#BD3DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1D3E99

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

Preview Lab → · Contrast checker → · Palette generator →