#1D4DA0#1D4DA0

#1D4DA0 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.8% C 0.145 H 260.6°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#1D4DA0
RGB	rgb(29, 77, 160)
HSL	hsl(218, 69%, 37%)
HSV	hsv(218, 82%, 63%)
CMYK	cmyk(81.9%, 51.9%, 0%, 37.3%)
CIE-LAB	lab(34.20, 15.68, -49.55)
CIE-LCH	lch(34.20, 51.97, 287.56°)
OKLab	oklab(43.8% -0.0236 -0.1427)
OKLCH	oklch(43.8% 0.145 260.6)
XYZ	xyz(9.5034, 8.1059, 34.3146)
Luminance	0.0811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4DA0 #A0701D

analogous

#1D8FA0 #1D4DA0 #2E1DA0

triadic

#1D4DA0 #A01D4D #4DA01D

tetradic

#1D4DA0 #A01D8F #A0701D #1DA02E

square

#1D4DA0 #A01D8F #A0701D #1DA02E

split-complementary

#1D4DA0 #A02E1D #8FA01D

monochromatic

#0A1B38 #14346C #1D4DA0 #2666D4 #5789E1

Accessibility & contrast

On white

8.01

#1D4DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1D4DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4DA0

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4DA0	#FFFFFF	#000000	##FFFFFF
##1D4DA0	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1657A3

Deuteranopia (green-blind)

#004B9E

Tritanopia (blue-blind)

#00616F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d4da0;
/* rgb */ color: rgb(29, 77, 160);
/* oklch */ color: oklch(43.8% 0.145 260.6);

Tailwind

colors: {
  custom: {
    50: '#707ebd',
    500: '#1d4da0',
    950: '#000000',
  },
}

SCSS

$custom: #1d4da0;
$custom-light: #707ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4da0",
  "rgb": {
    "r": 29,
    "g": 77,
    "b": 160
  },
  "hsl": {
    "h": 218.015,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43798,
    "c": 0.14467,
    "h": 260.6
  },
  "luminance": 0.08107
}

Semantic roles & 50–950 ramp

primary

#1D4DA0

secondary

#C49B55

accent

#AB3CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4DA0

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

Preview Lab → · Contrast checker → · Palette generator →