#1D2377#1D2377

#1D2377 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.5% C 0.141 H 272.0°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#1D2377
RGB	rgb(29, 35, 119)
HSL	hsl(236, 61%, 29%)
HSV	hsv(236, 76%, 47%)
CMYK	cmyk(75.6%, 70.6%, 0%, 53.3%)
CIE-LAB	lab(19.20, 28.29, -48.57)
CIE-LCH	lch(19.20, 56.21, 300.22°)
OKLab	oklab(31.51% 0.005 -0.1405)
OKLCH	oklch(31.51% 0.141 272)
XYZ	xyz(4.4364, 2.7947, 17.7548)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2377 #77711D

analogous

#1D5077 #1D2377 #441D77

triadic

#1D2377 #771D23 #23771D

tetradic

#1D2377 #771D50 #77711D #1D7744

square

#1D2377 #771D50 #77711D #1D7744

split-complementary

#1D2377 #77441D #50771D

monochromatic

#060719 #111546 #1D2377 #2931A8 #3E48D0

Accessibility & contrast

On white

13.47

#1D2377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1D2377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2377

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2377	#FFFFFF	#000000	##FFFFFF
##1D2377	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337A

Deuteranopia (green-blind)

#002A75

Tritanopia (blue-blind)

#003A4A

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1d2377;
/* rgb */ color: rgb(29, 35, 119);
/* oklch */ color: oklch(31.5% 0.141 272.0);

Tailwind

colors: {
  custom: {
    50: '#685e9f',
    500: '#1d2377',
    950: '#000000',
  },
}

SCSS

$custom: #1d2377;
$custom-light: #685e9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2377",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 119
  },
  "hsl": {
    "h": 236,
    "s": 60.811,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31506,
    "c": 0.14055,
    "h": 272
  },
  "luminance": 0.02795
}

Semantic roles & 50–950 ramp

primary

#1D2377

secondary

#ABA445

accent

#D944E4

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #1D2377

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

Preview Lab → · Contrast checker → · Palette generator →