#1D3597#1D3597

#1D3597 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.0% C 0.162 H 267.1°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1D3597
RGB	rgb(29, 53, 151)
HSL	hsl(228, 68%, 35%)
HSV	hsv(228, 81%, 59%)
CMYK	cmyk(80.8%, 64.9%, 0%, 40.8%)
CIE-LAB	lab(26.85, 28.45, -56.05)
CIE-LCH	lch(26.85, 62.86, 296.91°)
OKLab	oklab(38.04% -0.0081 -0.1622)
OKLCH	oklch(38.04% 0.162 267.1)
XYZ	xyz(7.3638, 5.0409, 29.8571)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3597 #977F1D

analogous

#1D7297 #1D3597 #421D97

triadic

#1D3597 #971D35 #35971D

tetradic

#1D3597 #971D72 #977F1D #1D9742

square

#1D3597 #971D72 #977F1D #1D9742

split-complementary

#1D3597 #97421D #72971D

monochromatic

#091130 #132364 #1D3597 #2747CA #516DDE

Accessibility & contrast

On white

10.46

#1D3597 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1D3597 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3597

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3597	#FFFFFF	#000000	##FFFFFF
##1D3597	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459A

Deuteranopia (green-blind)

#003A95

Tritanopia (blue-blind)

#004F61

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d3597;
/* rgb */ color: rgb(29, 53, 151);
/* oklch */ color: oklch(38.0% 0.162 267.1);

Tailwind

colors: {
  custom: {
    50: '#6f6cb7',
    500: '#1d3597',
    950: '#000000',
  },
}

SCSS

$custom: #1d3597;
$custom-light: #6f6cb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3597",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 151
  },
  "hsl": {
    "h": 228.197,
    "s": 67.778,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38043,
    "c": 0.16242,
    "h": 267.1
  },
  "luminance": 0.05042
}

Semantic roles & 50–950 ramp

primary

#1D3597

secondary

#C0AA4F

accent

#C93DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1D3597

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

Preview Lab → · Contrast checker → · Palette generator →