#1D4399#1D4399

#1D4399 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.1% C 0.148 H 263.4°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#1D4399
RGB	rgb(29, 67, 153)
HSL	hsl(222, 68%, 36%)
HSV	hsv(222, 81%, 60%)
CMYK	cmyk(81%, 56.2%, 0%, 40%)
CIE-LAB	lab(30.82, 19.68, -50.80)
CIE-LCH	lch(30.82, 54.48, 291.18°)
OKLab	oklab(41.06% -0.0171 -0.1466)
OKLCH	oklch(41.06% 0.148 263.4)
XYZ	xyz(8.2616, 6.5745, 30.9644)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4399 #99731D

analogous

#1D8199 #1D4399 #351D99

triadic

#1D4399 #991D43 #43991D

tetradic

#1D4399 #991D81 #99731D #1D9935

square

#1D4399 #991D81 #99731D #1D9935

split-complementary

#1D4399 #99351D #81991D

monochromatic

#091632 #132C66 #1D4399 #275ACC #527DDE

Accessibility & contrast

On white

9.07

#1D4399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1D4399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4399

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4399	#FFFFFF	#000000	##FFFFFF
##1D4399	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9C

Deuteranopia (green-blind)

#004397

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1d4399;
/* rgb */ color: rgb(29, 67, 153);
/* oklch */ color: oklch(41.1% 0.148 263.4);

Tailwind

colors: {
  custom: {
    50: '#6e76b8',
    500: '#1d4399',
    950: '#000000',
  },
}

SCSS

$custom: #1d4399;
$custom-light: #6e76b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4399",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 153
  },
  "hsl": {
    "h": 221.613,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.41059,
    "c": 0.14759,
    "h": 263.4
  },
  "luminance": 0.06575
}

Semantic roles & 50–950 ramp

primary

#1D4399

secondary

#C19F51

accent

#B63DEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1D4399

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

Preview Lab → · Contrast checker → · Palette generator →