#1D4B9E#1D4B9E

#1D4B9E is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.2% C 0.144 H 261.1°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B9E
RGB	rgb(29, 75, 158)
HSL	hsl(219, 69%, 37%)
HSV	hsv(219, 82%, 62%)
CMYK	cmyk(81.6%, 52.5%, 0%, 38%)
CIE-LAB	lab(33.48, 16.23, -49.51)
CIE-LCH	lch(33.48, 52.10, 288.15°)
OKLab	oklab(43.2% -0.0224 -0.1426)
OKLCH	oklch(43.2% 0.144 261.1)
XYZ	xyz(9.1921, 7.7609, 33.3547)
Luminance	0.0776 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B9E #9E701D

analogous

#1D8C9E #1D4B9E #301D9E

triadic

#1D4B9E #9E1D4B #4B9E1D

tetradic

#1D4B9E #9E1D8C #9E701D #1D9E30

square

#1D4B9E #9E1D8C #9E701D #1D9E30

split-complementary

#1D4B9E #9E301D #8C9E1D

monochromatic

#0A1A37 #14326A #1D4B9E #2664D2 #5687E0

Accessibility & contrast

On white

8.23

#1D4B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1D4B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B9E

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B9E	#FFFFFF	#000000	##FFFFFF
##1D4B9E	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1255A1

Deuteranopia (green-blind)

#00499C

Tritanopia (blue-blind)

#005F6D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d4b9e;
/* rgb */ color: rgb(29, 75, 158);
/* oklch */ color: oklch(43.2% 0.144 261.1);

Tailwind

colors: {
  custom: {
    50: '#6f7cbb',
    500: '#1d4b9e',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b9e;
$custom-light: #6f7cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b9e",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 158
  },
  "hsl": {
    "h": 218.605,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.432,
    "c": 0.1444,
    "h": 261.1
  },
  "luminance": 0.07762
}

Semantic roles & 50–950 ramp

primary

#1D4B9E

secondary

#C39B54

accent

#AD3CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4B9E

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

Preview Lab → · Contrast checker → · Palette generator →