#1D4BA1#1D4BA1

#1D4BA1 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.4% C 0.149 H 261.5°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#1D4BA1
RGB	rgb(29, 75, 161)
HSL	hsl(219, 69%, 37%)
HSV	hsv(219, 82%, 63%)
CMYK	cmyk(82%, 53.4%, 0%, 36.9%)
CIE-LAB	lab(33.70, 17.43, -50.96)
CIE-LCH	lch(33.70, 53.86, 288.89°)
OKLab	oklab(43.44% -0.022 -0.1469)
OKLCH	oklch(43.44% 0.149 261.5)
XYZ	xyz(9.4535, 7.8654, 34.7312)
Luminance	0.0787 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4BA1 #A1731D

analogous

#1D8DA1 #1D4BA1 #311DA1

triadic

#1D4BA1 #A11D4B #4BA11D

tetradic

#1D4BA1 #A11D8D #A1731D #1DA131

square

#1D4BA1 #A11D8D #A1731D #1DA131

split-complementary

#1D4BA1 #A1311D #8DA11D

monochromatic

#0A1B39 #14336D #1D4BA1 #2663D5 #5887E1

Accessibility & contrast

On white

8.16

#1D4BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1D4BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4BA1

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4BA1	#FFFFFF	#000000	##FFFFFF
##1D4BA1	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A56A4

Deuteranopia (green-blind)

#004A9F

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d4ba1;
/* rgb */ color: rgb(29, 75, 161);
/* oklch */ color: oklch(43.4% 0.149 261.5);

Tailwind

colors: {
  custom: {
    50: '#707cbd',
    500: '#1d4ba1',
    950: '#000000',
  },
}

SCSS

$custom: #1d4ba1;
$custom-light: #707cbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4ba1",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 161
  },
  "hsl": {
    "h": 219.091,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.43439,
    "c": 0.14857,
    "h": 261.5
  },
  "luminance": 0.07867
}

Semantic roles & 50–950 ramp

primary

#1D4BA1

secondary

#C49E55

accent

#AF3CEC

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4BA1

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

Preview Lab → · Contrast checker → · Palette generator →