#1D3AA1#1D3AA1

#1D3AA1 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.0% C 0.170 H 266.2°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D3AA1
RGB	rgb(29, 58, 161)
HSL	hsl(227, 69%, 37%)
HSV	hsv(227, 82%, 63%)
CMYK	cmyk(82%, 64%, 0%, 36.9%)
CIE-LAB	lab(29.06, 28.96, -58.53)
CIE-LCH	lch(29.06, 65.30, 296.32°)
OKLab	oklab(39.95% -0.0111 -0.1694)
OKLCH	oklch(39.95% 0.17 266.2)
XYZ	xyz(8.4505, 5.8595, 34.3969)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3AA1 #A1841D

analogous

#1D7CA1 #1D3AA1 #421DA1

triadic

#1D3AA1 #A11D3A #3AA11D

tetradic

#1D3AA1 #A11D7C #A1841D #1DA142

square

#1D3AA1 #A11D7C #A1841D #1DA142

split-complementary

#1D3AA1 #A1421D #7CA11D

monochromatic

#0A1539 #14276D #1D3AA1 #264DD5 #5876E1

Accessibility & contrast

On white

9.67

#1D3AA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1D3AA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3AA1

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3AA1	#FFFFFF	#000000	##FFFFFF
##1D3AA1	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA4

Deuteranopia (green-blind)

#003E9F

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d3aa1;
/* rgb */ color: rgb(29, 58, 161);
/* oklch */ color: oklch(40.0% 0.170 266.2);

Tailwind

colors: {
  custom: {
    50: '#716fbe',
    500: '#1d3aa1',
    950: '#000000',
  },
}

SCSS

$custom: #1d3aa1;
$custom-light: #716fbe;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3aa1",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 161
  },
  "hsl": {
    "h": 226.818,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39951,
    "c": 0.16978,
    "h": 266.2
  },
  "luminance": 0.05861
}

Semantic roles & 50–950 ramp

primary

#1D3AA1

secondary

#C4AC55

accent

#C53CEC

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3AA1

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

Preview Lab → · Contrast checker → · Palette generator →