#1D4B9F#1D4B9F

#1D4B9F is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.3% C 0.146 H 261.2°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B9F
RGB	rgb(29, 75, 159)
HSL	hsl(219, 69%, 37%)
HSV	hsv(219, 82%, 62%)
CMYK	cmyk(81.8%, 52.8%, 0%, 37.6%)
CIE-LAB	lab(33.55, 16.63, -50.00)
CIE-LCH	lch(33.55, 52.69, 288.40°)
OKLab	oklab(43.28% -0.0223 -0.1441)
OKLCH	oklch(43.28% 0.146 261.2)
XYZ	xyz(9.2785, 7.7955, 33.8098)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B9F #9F711D

analogous

#1D8C9F #1D4B9F #301D9F

triadic

#1D4B9F #9F1D4B #4B9F1D

tetradic

#1D4B9F #9F1D8C #9F711D #1D9F30

square

#1D4B9F #9F1D8C #9F711D #1D9F30

split-complementary

#1D4B9F #9F301D #8C9F1D

monochromatic

#0A1A37 #14336B #1D4B9F #2663D3 #5687E0

Accessibility & contrast

On white

8.21

#1D4B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1D4B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B9F

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B9F	#FFFFFF	#000000	##FFFFFF
##1D4B9F	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F55A2

Deuteranopia (green-blind)

#00499D

Tritanopia (blue-blind)

#00606D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d4b9f;
/* rgb */ color: rgb(29, 75, 159);
/* oklch */ color: oklch(43.3% 0.146 261.2);

Tailwind

colors: {
  custom: {
    50: '#6f7cbc',
    500: '#1d4b9f',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b9f;
$custom-light: #6f7cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b9f",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 159
  },
  "hsl": {
    "h": 218.769,
    "s": 69.149,
    "l": 36.863
  },
  "oklch": {
    "l": 0.43279,
    "c": 0.14579,
    "h": 261.2
  },
  "luminance": 0.07797
}

Semantic roles & 50–950 ramp

primary

#1D4B9F

secondary

#C49C54

accent

#AE3CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4B9F

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

Preview Lab → · Contrast checker → · Palette generator →