#1D3F98#1D3F98

#1D3F98 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.1% C 0.151 H 264.6°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#1D3F98
RGB	rgb(29, 63, 152)
HSL	hsl(223, 68%, 35%)
HSV	hsv(223, 81%, 60%)
CMYK	cmyk(80.9%, 58.6%, 0%, 40.4%)
CIE-LAB	lab(29.62, 22.03, -52.14)
CIE-LCH	lch(29.62, 56.60, 292.90°)
OKLab	oklab(40.13% -0.0144 -0.1506)
OKLCH	oklch(40.13% 0.151 264.6)
XYZ	xyz(7.9497, 6.0823, 30.4547)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3F98 #98761D

analogous

#1D7C98 #1D3F98 #391D98

triadic

#1D3F98 #981D3F #3F981D

tetradic

#1D3F98 #981D7C #98761D #1D9839

square

#1D3F98 #981D7C #98761D #1D9839

split-complementary

#1D3F98 #98391D #7C981D

monochromatic

#091431 #132A65 #1D3F98 #2754CB #5278DE

Accessibility & contrast

On white

9.47

#1D3F98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1D3F98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3F98

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3F98	#FFFFFF	#000000	##FFFFFF
##1D3F98	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9B

Deuteranopia (green-blind)

#004096

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d3f98;
/* rgb */ color: rgb(29, 63, 152);
/* oklch */ color: oklch(40.1% 0.151 264.6);

Tailwind

colors: {
  custom: {
    50: '#6e73b7',
    500: '#1d3f98',
    950: '#000000',
  },
}

SCSS

$custom: #1d3f98;
$custom-light: #6e73b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3f98",
  "rgb": {
    "r": 29,
    "g": 63,
    "b": 152
  },
  "hsl": {
    "h": 223.415,
    "s": 67.956,
    "l": 35.49
  },
  "oklch": {
    "l": 0.40131,
    "c": 0.15129,
    "h": 264.6
  },
  "luminance": 0.06083
}

Semantic roles & 50–950 ramp

primary

#1D3F98

secondary

#C1A250

accent

#BB3DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1D3F98

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

Preview Lab → · Contrast checker → · Palette generator →