#1D398E#1D398E

#1D398E is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.0% C 0.145 H 265.8°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#1D398E
RGB	rgb(29, 57, 142)
HSL	hsl(225, 66%, 34%)
HSV	hsv(225, 80%, 56%)
CMYK	cmyk(79.6%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(27.13, 22.18, -50.06)
CIE-LCH	lch(27.13, 54.76, 293.90°)
OKLab	oklab(38.01% -0.0107 -0.1446)
OKLCH	oklch(38.01% 0.145 265.8)
XYZ	xyz(6.8506, 5.1397, 26.2169)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D398E #8E721D

analogous

#1D718E #1D398E #391D8E

triadic

#1D398E #8E1D39 #398E1D

tetradic

#1D398E #8E1D71 #8E721D #1D8E39

square

#1D398E #8E1D71 #8E721D #1D8E39

split-complementary

#1D398E #8E391D #718E1D

monochromatic

#081028 #13255B #1D398E #274DC1 #4B6FDA

Accessibility & contrast

On white

10.36

#1D398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1D398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D398E

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D398E	#FFFFFF	#000000	##FFFFFF
##1D398E	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)

#004691

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d398e;
/* rgb */ color: rgb(29, 57, 142);
/* oklch */ color: oklch(38.0% 0.145 265.8);

Tailwind

colors: {
  custom: {
    50: '#6c6fb0',
    500: '#1d398e',
    950: '#000000',
  },
}

SCSS

$custom: #1d398e;
$custom-light: #6c6fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d398e",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 225.133,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38005,
    "c": 0.145,
    "h": 265.8
  },
  "luminance": 0.0514
}

Semantic roles & 50–950 ramp

primary

#1D398E

secondary

#BDA04A

accent

#BF3FE9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D398E

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

Preview Lab → · Contrast checker → · Palette generator →