#1D398D#1D398D

#1D398D is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.144 H 265.7°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#1D398D
RGB	rgb(29, 57, 141)
HSL	hsl(225, 66%, 33%)
HSV	hsv(225, 79%, 55%)
CMYK	cmyk(79.4%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(27.05, 21.78, -49.58)
CIE-LCH	lch(27.05, 54.16, 293.72°)
OKLab	oklab(37.92% -0.0107 -0.1432)
OKLCH	oklch(37.92% 0.144 265.7)
XYZ	xyz(6.7758, 5.1098, 25.8233)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D398D #8D711D

analogous

#1D718D #1D398D #391D8D

triadic

#1D398D #8D1D39 #398D1D

tetradic

#1D398D #8D1D71 #8D711D #1D8D39

square

#1D398D #8D1D71 #8D711D #1D8D39

split-complementary

#1D398D #8D391D #718D1D

monochromatic

#081027 #13245A #1D398D #274EC0 #4B6EDA

Accessibility & contrast

On white

10.38

#1D398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1D398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D398D

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D398D	#FFFFFF	#000000	##FFFFFF
##1D398D	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d398d;
/* rgb */ color: rgb(29, 57, 141);
/* oklch */ color: oklch(37.9% 0.144 265.7);

Tailwind

colors: {
  custom: {
    50: '#6c6eaf',
    500: '#1d398d',
    950: '#000000',
  },
}

SCSS

$custom: #1d398d;
$custom-light: #6c6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d398d",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 225,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37916,
    "c": 0.14359,
    "h": 265.7
  },
  "luminance": 0.05111
}

Semantic roles & 50–950 ramp

primary

#1D398D

secondary

#BCA04A

accent

#BE3FE9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D398D

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

Preview Lab → · Contrast checker → · Palette generator →