#1D509B#1D509B

#1D509B is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.1% C 0.134 H 258.5°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D509B
RGB	rgb(29, 80, 155)
HSL	hsl(216, 68%, 36%)
HSV	hsv(216, 81%, 61%)
CMYK	cmyk(81.3%, 48.4%, 0%, 39.2%)
CIE-LAB	lab(34.73, 11.65, -45.69)
CIE-LCH	lch(34.73, 47.15, 284.31°)
OKLab	oklab(44.09% -0.0267 -0.1313)
OKLCH	oklch(44.09% 0.134 258.5)
XYZ	xyz(9.2896, 8.3640, 32.1288)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D509B #9B681D

analogous

#1D8F9B #1D509B #291D9B

triadic

#1D509B #9B1D50 #509B1D

tetradic

#1D509B #9B1D8F #9B681D #1D9B29

square

#1D509B #9B1D8F #9B681D #1D9B29

split-complementary

#1D509B #9B291D #8F9B1D

monochromatic

#0A1B34 #133567 #1D509B #276BCF #538CDF

Accessibility & contrast

On white

7.86

#1D509B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1D509B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D509B

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D509B	#FFFFFF	#000000	##FFFFFF
##1D509B	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26589E

Deuteranopia (green-blind)

#004C9A

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d509b;
/* rgb */ color: rgb(29, 80, 155);
/* oklch */ color: oklch(44.1% 0.134 258.5);

Tailwind

colors: {
  custom: {
    50: '#6e80b9',
    500: '#1d509b',
    950: '#000000',
  },
}

SCSS

$custom: #1d509b;
$custom-light: #6e80b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d509b",
  "rgb": {
    "r": 29,
    "g": 80,
    "b": 155
  },
  "hsl": {
    "h": 215.714,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.4409,
    "c": 0.13399,
    "h": 258.5
  },
  "luminance": 0.08365
}

Semantic roles & 50–950 ramp

primary

#1D509B

secondary

#C29552

accent

#A53CEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1D509B

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

Preview Lab → · Contrast checker → · Palette generator →