#1D398F#1D398F

#1D398F is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.146 H 265.8°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#1D398F
RGB	rgb(29, 57, 143)
HSL	hsl(225, 66%, 34%)
HSV	hsv(225, 80%, 56%)
CMYK	cmyk(79.7%, 60.1%, 0%, 43.9%)
CIE-LAB	lab(27.21, 22.58, -50.54)
CIE-LCH	lch(27.21, 55.36, 294.07°)
OKLab	oklab(38.09% -0.0106 -0.146)
OKLCH	oklch(38.09% 0.146 265.8)
XYZ	xyz(6.9260, 5.1698, 26.6141)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D398F #8F731D

analogous

#1D728F #1D398F #3A1D8F

triadic

#1D398F #8F1D39 #398F1D

tetradic

#1D398F #8F1D72 #8F731D #1D8F3A

square

#1D398F #8F1D72 #8F731D #1D8F3A

split-complementary

#1D398F #8F3A1D #728F1D

monochromatic

#081029 #13255C #1D398F #274DC2 #4C6FDB

Accessibility & contrast

On white

10.32

#1D398F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1D398F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D398F

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D398F	#FFFFFF	#000000	##FFFFFF
##1D398F	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004692

Deuteranopia (green-blind)

#003B8D

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d398f;
/* rgb */ color: rgb(29, 57, 143);
/* oklch */ color: oklch(38.1% 0.146 265.8);

Tailwind

colors: {
  custom: {
    50: '#6c6fb1',
    500: '#1d398f',
    950: '#000000',
  },
}

SCSS

$custom: #1d398f;
$custom-light: #6c6fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d398f",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 143
  },
  "hsl": {
    "h": 225.263,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38094,
    "c": 0.14641,
    "h": 265.8
  },
  "luminance": 0.05171
}

Semantic roles & 50–950 ramp

primary

#1D398F

secondary

#BDA14B

accent

#BF3FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1D398F

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

Preview Lab → · Contrast checker → · Palette generator →