#1D397D#1D397D

#1D397D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.5% C 0.121 H 264.4°. Best body text is #FFFFFF at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D397D
RGB	rgb(29, 57, 125)
HSL	hsl(223, 62%, 30%)
HSV	hsv(223, 77%, 49%)
CMYK	cmyk(76.8%, 54.4%, 0%, 51%)
CIE-LAB	lab(25.77, 15.35, -41.68)
CIE-LCH	lch(25.77, 44.41, 290.21°)
OKLab	oklab(36.55% -0.0119 -0.12)
OKLCH	oklch(36.55% 0.121 264.4)
XYZ	xyz(5.6702, 4.6675, 20.0001)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D397D #7D611D

analogous

#1D697D #1D397D #311D7D

triadic

#1D397D #7D1D39 #397D1D

tetradic

#1D397D #7D1D69 #7D611D #1D7D31

square

#1D397D #7D1D69 #7D611D #1D7D31

split-complementary

#1D397D #7D311D #697D1D

monochromatic

#060C1A #11224B #1D397D #2950AF #416CD3

Accessibility & contrast

On white

10.86

#1D397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1D397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D397D

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D397D	#FFFFFF	#000000	##FFFFFF
##1D397D	1.00	10.86	1.93	10.86
#FFFFFF	10.86	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A427F

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d397d;
/* rgb */ color: rgb(29, 57, 125);
/* oklch */ color: oklch(36.5% 0.121 264.4);

Tailwind

colors: {
  custom: {
    50: '#686ea3',
    500: '#1d397d',
    950: '#000000',
  },
}

SCSS

$custom: #1d397d;
$custom-light: #686ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d397d",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 222.5,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.36548,
    "c": 0.12054,
    "h": 264.4
  },
  "luminance": 0.04668
}

Semantic roles & 50–950 ramp

primary

#1D397D

secondary

#B19145

accent

#B642E5

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D397D

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

Preview Lab → · Contrast checker → · Palette generator →