#1D4598#1D4598

#1D4598 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.4% C 0.144 H 262.6°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#1D4598
RGB	rgb(29, 69, 152)
HSL	hsl(220, 68%, 35%)
HSV	hsv(220, 81%, 60%)
CMYK	cmyk(80.9%, 54.6%, 0%, 40.4%)
CIE-LAB	lab(31.31, 17.91, -49.40)
CIE-LCH	lch(31.31, 52.54, 289.93°)
OKLab	oklab(41.41% -0.0186 -0.1424)
OKLCH	oklch(41.41% 0.144 262.6)
XYZ	xyz(8.3003, 6.7835, 30.5716)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4598 #98701D

analogous

#1D8298 #1D4598 #331D98

triadic

#1D4598 #981D45 #45981D

tetradic

#1D4598 #981D82 #98701D #1D9833

square

#1D4598 #981D82 #98701D #1D9833

split-complementary

#1D4598 #98331D #82981D

monochromatic

#091631 #132E65 #1D4598 #275CCB #527FDE

Accessibility & contrast

On white

8.91

#1D4598 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1D4598 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4598

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4598	#FFFFFF	#000000	##FFFFFF
##1D4598	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01509B

Deuteranopia (green-blind)

#004496

Tritanopia (blue-blind)

#005967

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1d4598;
/* rgb */ color: rgb(29, 69, 152);
/* oklch */ color: oklch(41.4% 0.144 262.6);

Tailwind

colors: {
  custom: {
    50: '#6e78b7',
    500: '#1d4598',
    950: '#000000',
  },
}

SCSS

$custom: #1d4598;
$custom-light: #6e78b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4598",
  "rgb": {
    "r": 29,
    "g": 69,
    "b": 152
  },
  "hsl": {
    "h": 220.488,
    "s": 67.956,
    "l": 35.49
  },
  "oklch": {
    "l": 0.41407,
    "c": 0.14364,
    "h": 262.6
  },
  "luminance": 0.06784
}

Semantic roles & 50–950 ramp

primary

#1D4598

secondary

#C19C50

accent

#B23DEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1D4598

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

Preview Lab → · Contrast checker → · Palette generator →