#1D305A#1D305A

#1D305A is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.7% C 0.079 H 264.1°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#1D305A
RGB	rgb(29, 48, 90)
HSL	hsl(221, 51%, 23%)
HSV	hsv(221, 68%, 35%)
CMYK	cmyk(67.8%, 46.7%, 0%, 64.7%)
CIE-LAB	lab(20.49, 7.60, -27.60)
CIE-LCH	lch(20.49, 28.62, 285.39°)
OKLab	oklab(31.71% -0.0081 -0.0787)
OKLCH	oklch(31.71% 0.079 264.1)
XYZ	xyz(3.4085, 3.1130, 10.0921)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D305A #5A471D

analogous

#1D4E5A #1D305A #281D5A

triadic

#1D305A #5A1D30 #305A1D

tetradic

#1D305A #5A1D4E #5A471D #1D5A28

square

#1D305A #5A1D4E #5A471D #1D5A28

split-complementary

#1D305A #5A281D #4E5A1D

monochromatic

#070C17 #0E172C #1D305A #2C4988 #3B61B7

Accessibility & contrast

On white

12.94

#1D305A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1D305A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D305A

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D305A	#FFFFFF	#000000	##FFFFFF
##1D305A	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D345C

Deuteranopia (green-blind)

#132F59

Tritanopia (blue-blind)

#003A40

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1d305a;
/* rgb */ color: rgb(29, 48, 90);
/* oklch */ color: oklch(31.7% 0.079 264.1);

Tailwind

colors: {
  custom: {
    50: '#606789',
    500: '#1d305a',
    950: '#000000',
  },
}

SCSS

$custom: #1d305a;
$custom-light: #606789;
$custom-dark: #000000;

JSON

{
  "hex": "#1d305a",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 90
  },
  "hsl": {
    "h": 221.311,
    "s": 51.261,
    "l": 23.333
  },
  "oklch": {
    "l": 0.31713,
    "c": 0.07912,
    "h": 264.1
  },
  "luminance": 0.03113
}

Semantic roles & 50–950 ramp

primary

#1D305A

secondary

#8F7844

accent

#AF4DDB

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1D305A

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

Preview Lab → · Contrast checker → · Palette generator →