#1D398C#1D398C

#1D398C is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.142 H 265.7°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#1D398C
RGB	rgb(29, 57, 140)
HSL	hsl(225, 66%, 33%)
HSV	hsv(225, 79%, 55%)
CMYK	cmyk(79.3%, 59.3%, 0%, 45.1%)
CIE-LAB	lab(26.96, 21.38, -49.10)
CIE-LCH	lch(26.96, 53.55, 293.53°)
OKLab	oklab(37.83% -0.0107 -0.1418)
OKLCH	oklch(37.83% 0.142 265.7)
XYZ	xyz(6.7018, 5.0802, 25.4332)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D398C #8C701D

analogous

#1D708C #1D398C #391D8C

triadic

#1D398C #8C1D39 #398C1D

tetradic

#1D398C #8C1D70 #8C701D #1D8C39

square

#1D398C #8C1D70 #8C701D #1D8C39

split-complementary

#1D398C #8C391D #708C1D

monochromatic

#081027 #122459 #1D398C #284EBF #4A6ED9

Accessibility & contrast

On white

10.42

#1D398C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1D398C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D398C

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D398C	#FFFFFF	#000000	##FFFFFF
##1D398C	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003B8A

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d398c;
/* rgb */ color: rgb(29, 57, 140);
/* oklch */ color: oklch(37.8% 0.142 265.7);

Tailwind

colors: {
  custom: {
    50: '#6c6eae',
    500: '#1d398c',
    950: '#000000',
  },
}

SCSS

$custom: #1d398c;
$custom-light: #6c6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d398c",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 140
  },
  "hsl": {
    "h": 224.865,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37827,
    "c": 0.14219,
    "h": 265.7
  },
  "luminance": 0.05081
}

Semantic roles & 50–950 ramp

primary

#1D398C

secondary

#BC9F49

accent

#BE3FE9

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D398C

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

Preview Lab → · Contrast checker → · Palette generator →