#1D338E#1D338E

#1D338E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.8% C 0.153 H 267.5°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#1D338E
RGB	rgb(29, 51, 142)
HSL	hsl(228, 66%, 34%)
HSV	hsv(228, 80%, 56%)
CMYK	cmyk(79.6%, 64.1%, 0%, 44.3%)
CIE-LAB	lab(25.51, 26.31, -52.71)
CIE-LCH	lch(25.51, 58.91, 296.52°)
OKLab	oklab(36.8% -0.0067 -0.1525)
OKLCH	oklch(36.8% 0.153 267.5)
XYZ	xyz(6.5713, 4.5811, 26.1239)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D338E #8E781D

analogous

#1D6B8E #1D338E #3F1D8E

triadic

#1D338E #8E1D33 #338E1D

tetradic

#1D338E #8E1D6B #8E781D #1D8E3F

square

#1D338E #8E1D6B #8E781D #1D8E3F

split-complementary

#1D338E #8E3F1D #6B8E1D

monochromatic

#080E28 #13215B #1D338E #2745C1 #4B67DA

Accessibility & contrast

On white

10.96

#1D338E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1D338E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D338E

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D338E	#FFFFFF	#000000	##FFFFFF
##1D338E	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)

#004291

Deuteranopia (green-blind)

#00378C

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d338e;
/* rgb */ color: rgb(29, 51, 142);
/* oklch */ color: oklch(36.8% 0.153 267.5);

Tailwind

colors: {
  custom: {
    50: '#6d6ab0',
    500: '#1d338e',
    950: '#000000',
  },
}

SCSS

$custom: #1d338e;
$custom-light: #6d6ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d338e",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 142
  },
  "hsl": {
    "h": 228.319,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36798,
    "c": 0.15261,
    "h": 267.5
  },
  "luminance": 0.04582
}

Semantic roles & 50–950 ramp

primary

#1D338E

secondary

#BDA64A

accent

#C83FE9

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1D338E

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

Preview Lab → · Contrast checker → · Palette generator →