#1D348B#1D348B

#1D348B is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.147 H 267.2°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#1D348B
RGB	rgb(29, 52, 139)
HSL	hsl(227, 65%, 33%)
HSV	hsv(227, 79%, 55%)
CMYK	cmyk(79.1%, 62.6%, 0%, 45.5%)
CIE-LAB	lab(25.50, 24.44, -50.86)
CIE-LCH	lch(25.50, 56.43, 295.67°)
OKLab	oklab(36.71% -0.0073 -0.147)
OKLCH	oklch(36.71% 0.147 267.2)
XYZ	xyz(6.3933, 4.5806, 24.9683)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D348B #8B741D

analogous

#1D6B8B #1D348B #3D1D8B

triadic

#1D348B #8B1D34 #348B1D

tetradic

#1D348B #8B1D6B #8B741D #1D8B3D

square

#1D348B #8B1D6B #8B741D #1D8B3D

split-complementary

#1D348B #8B3D1D #6B8B1D

monochromatic

#080E26 #122158 #1D348B #2847BE #4967D9

Accessibility & contrast

On white

10.96

#1D348B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1D348B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D348B

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D348B	#FFFFFF	#000000	##FFFFFF
##1D348B	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428E

Deuteranopia (green-blind)

#003789

Tritanopia (blue-blind)

#004A5A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d348b;
/* rgb */ color: rgb(29, 52, 139);
/* oklch */ color: oklch(36.7% 0.147 267.2);

Tailwind

colors: {
  custom: {
    50: '#6c6bae',
    500: '#1d348b',
    950: '#000000',
  },
}

SCSS

$custom: #1d348b;
$custom-light: #6c6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d348b",
  "rgb": {
    "r": 29,
    "g": 52,
    "b": 139
  },
  "hsl": {
    "h": 227.455,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.36713,
    "c": 0.14719,
    "h": 267.2
  },
  "luminance": 0.04581
}

Semantic roles & 50–950 ramp

primary

#1D348B

secondary

#BBA349

accent

#C53FE8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D348B

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

Preview Lab → · Contrast checker → · Palette generator →