#1D3697#1D3697

#1D3697 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.2% C 0.161 H 266.9°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#1D3697
RGB	rgb(29, 54, 151)
HSL	hsl(228, 68%, 35%)
HSV	hsv(228, 81%, 59%)
CMYK	cmyk(80.8%, 64.2%, 0%, 40.8%)
CIE-LAB	lab(27.11, 27.78, -55.63)
CIE-LCH	lch(27.11, 62.18, 296.53°)
OKLab	oklab(38.24% -0.0087 -0.161)
OKLCH	oklch(38.24% 0.161 266.9)
XYZ	xyz(7.4098, 5.1330, 29.8724)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3697 #977E1D

analogous

#1D7397 #1D3697 #411D97

triadic

#1D3697 #971D36 #36971D

tetradic

#1D3697 #971D73 #977E1D #1D9741

square

#1D3697 #971D73 #977E1D #1D9741

split-complementary

#1D3697 #97411D #73971D

monochromatic

#091130 #132464 #1D3697 #2748CA #516EDE

Accessibility & contrast

On white

10.36

#1D3697 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1D3697 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3697

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3697	#FFFFFF	#000000	##FFFFFF
##1D3697	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469A

Deuteranopia (green-blind)

#003A95

Tritanopia (blue-blind)

#004F61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d3697;
/* rgb */ color: rgb(29, 54, 151);
/* oklch */ color: oklch(38.2% 0.161 266.9);

Tailwind

colors: {
  custom: {
    50: '#6f6cb6',
    500: '#1d3697',
    950: '#000000',
  },
}

SCSS

$custom: #1d3697;
$custom-light: #6f6cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3697",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 151
  },
  "hsl": {
    "h": 227.705,
    "s": 67.778,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38235,
    "c": 0.1612,
    "h": 266.9
  },
  "luminance": 0.05134
}

Semantic roles & 50–950 ramp

primary

#1D3697

secondary

#C0A94F

accent

#C73DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1D3697

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

Preview Lab → · Contrast checker → · Palette generator →