#1D4D9F#1D4D9F

#1D4D9F is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.7% C 0.143 H 260.4°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#1D4D9F
RGB	rgb(29, 77, 159)
HSL	hsl(218, 69%, 37%)
HSV	hsv(218, 82%, 62%)
CMYK	cmyk(81.8%, 51.6%, 0%, 37.6%)
CIE-LAB	lab(34.13, 15.28, -49.06)
CIE-LCH	lch(34.13, 51.39, 287.30°)
OKLab	oklab(43.72% -0.0238 -0.1413)
OKLCH	oklch(43.72% 0.143 260.4)
XYZ	xyz(9.4163, 8.0710, 33.8557)
Luminance	0.0807 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4D9F #9F6F1D

analogous

#1D8E9F #1D4D9F #2E1D9F

triadic

#1D4D9F #9F1D4D #4D9F1D

tetradic

#1D4D9F #9F1D8E #9F6F1D #1D9F2E

square

#1D4D9F #9F1D8E #9F6F1D #1D9F2E

split-complementary

#1D4D9F #9F2E1D #8E9F1D

monochromatic

#0A1B37 #14346B #1D4D9F #2666D3 #5689E0

Accessibility & contrast

On white

8.03

#1D4D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#1D4D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4D9F

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4D9F	#FFFFFF	#000000	##FFFFFF
##1D4D9F	1.00	8.03	2.61	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1856A2

Deuteranopia (green-blind)

#004B9D

Tritanopia (blue-blind)

#00616E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d4d9f;
/* rgb */ color: rgb(29, 77, 159);
/* oklch */ color: oklch(43.7% 0.143 260.4);

Tailwind

colors: {
  custom: {
    50: '#6f7ebc',
    500: '#1d4d9f',
    950: '#000000',
  },
}

SCSS

$custom: #1d4d9f;
$custom-light: #6f7ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4d9f",
  "rgb": {
    "r": 29,
    "g": 77,
    "b": 159
  },
  "hsl": {
    "h": 217.846,
    "s": 69.149,
    "l": 36.863
  },
  "oklch": {
    "l": 0.4372,
    "c": 0.14328,
    "h": 260.4
  },
  "luminance": 0.08072
}

Semantic roles & 50–950 ramp

primary

#1D4D9F

secondary

#C49A54

accent

#AB3CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4D9F

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

Preview Lab → · Contrast checker → · Palette generator →