#1D397E#1D397E

#1D397E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.6% C 0.122 H 264.5°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#1D397E
RGB	rgb(29, 57, 126)
HSL	hsl(223, 63%, 30%)
HSV	hsv(223, 77%, 49%)
CMYK	cmyk(77%, 54.8%, 0%, 50.6%)
CIE-LAB	lab(25.84, 15.75, -42.19)
CIE-LCH	lch(25.84, 45.03, 290.47°)
OKLab	oklab(36.63% -0.0118 -0.1214)
OKLCH	oklch(36.63% 0.122 264.5)
XYZ	xyz(5.7344, 4.6932, 20.3383)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D397E #7E621D

analogous

#1D6A7E #1D397E #311D7E

triadic

#1D397E #7E1D39 #397E1D

tetradic

#1D397E #7E1D6A #7E621D #1D7E31

square

#1D397E #7E1D6A #7E621D #1D7E31

split-complementary

#1D397E #7E311D #6A7E1D

monochromatic

#060C1B #12224C #1D397E #2850B0 #426CD3

Accessibility & contrast

On white

10.83

#1D397E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1D397E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D397E

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D397E	#FFFFFF	#000000	##FFFFFF
##1D397E	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074280

Deuteranopia (green-blind)

#00397D

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d397e;
/* rgb */ color: rgb(29, 57, 126);
/* oklch */ color: oklch(36.6% 0.122 264.5);

Tailwind

colors: {
  custom: {
    50: '#686ea4',
    500: '#1d397e',
    950: '#000000',
  },
}

SCSS

$custom: #1d397e;
$custom-light: #686ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d397e",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 126
  },
  "hsl": {
    "h": 222.68,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3663,
    "c": 0.12202,
    "h": 264.5
  },
  "luminance": 0.04694
}

Semantic roles & 50–950 ramp

primary

#1D397E

secondary

#B19245

accent

#B642E6

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D397E

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

Preview Lab → · Contrast checker → · Palette generator →