#1D409B#1D409B

#1D409B is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.154 H 264.5°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#1D409B
RGB	rgb(29, 64, 155)
HSL	hsl(223, 68%, 36%)
HSV	hsv(223, 81%, 61%)
CMYK	cmyk(81.3%, 58.7%, 0%, 39.2%)
CIE-LAB	lab(30.14, 22.54, -53.12)
CIE-LCH	lch(30.14, 57.70, 292.99°)
OKLab	oklab(40.6% -0.0149 -0.1535)
OKLCH	oklch(40.6% 0.154 264.5)
XYZ	xyz(8.2544, 6.2936, 31.7837)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D409B #9B781D

analogous

#1D7F9B #1D409B #391D9B

triadic

#1D409B #9B1D40 #409B1D

tetradic

#1D409B #9B1D7F #9B781D #1D9B39

square

#1D409B #9B1D7F #9B781D #1D9B39

split-complementary

#1D409B #9B391D #7F9B1D

monochromatic

#0A1534 #132B67 #1D409B #2755CF #537ADF

Accessibility & contrast

On white

9.30

#1D409B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1D409B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D409B

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D409B	#FFFFFF	#000000	##FFFFFF
##1D409B	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1d409b;
/* rgb */ color: rgb(29, 64, 155);
/* oklch */ color: oklch(40.6% 0.154 264.5);

Tailwind

colors: {
  custom: {
    50: '#6f74b9',
    500: '#1d409b',
    950: '#000000',
  },
}

SCSS

$custom: #1d409b;
$custom-light: #6f74b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d409b",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 155
  },
  "hsl": {
    "h": 223.333,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.406,
    "c": 0.15418,
    "h": 264.5
  },
  "luminance": 0.06295
}

Semantic roles & 50–950 ramp

primary

#1D409B

secondary

#C2A352

accent

#BB3CEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D409B

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

Preview Lab → · Contrast checker → · Palette generator →