#1D338A#1D338A

#1D338A is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.147 H 267.4°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#1D338A
RGB	rgb(29, 51, 138)
HSL	hsl(228, 65%, 33%)
HSV	hsv(228, 79%, 54%)
CMYK	cmyk(79%, 63%, 0%, 45.9%)
CIE-LAB	lab(25.15, 24.74, -50.82)
CIE-LCH	lch(25.15, 56.52, 295.96°)
OKLab	oklab(36.42% -0.0066 -0.1469)
OKLCH	oklch(36.42% 0.147 267.4)
XYZ	xyz(6.2764, 4.4631, 24.5705)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D338A #8A741D

analogous

#1D698A #1D338A #3E1D8A

triadic

#1D338A #8A1D33 #338A1D

tetradic

#1D338A #8A1D69 #8A741D #1D8A3E

square

#1D338A #8A1D69 #8A741D #1D8A3E

split-complementary

#1D338A #8A3E1D #698A1D

monochromatic

#080E25 #122057 #1D338A #2846BD #4966D9

Accessibility & contrast

On white

11.09

#1D338A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1D338A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D338A

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D338A	#FFFFFF	#000000	##FFFFFF
##1D338A	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418D

Deuteranopia (green-blind)

#003788

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d338a;
/* rgb */ color: rgb(29, 51, 138);
/* oklch */ color: oklch(36.4% 0.147 267.4);

Tailwind

colors: {
  custom: {
    50: '#6c6aad',
    500: '#1d338a',
    950: '#000000',
  },
}

SCSS

$custom: #1d338a;
$custom-light: #6c6aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d338a",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 138
  },
  "hsl": {
    "h": 227.89,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.3642,
    "c": 0.14706,
    "h": 267.4
  },
  "luminance": 0.04464
}

Semantic roles & 50–950 ramp

primary

#1D338A

secondary

#BBA448

accent

#C640E8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D338A

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

Preview Lab → · Contrast checker → · Palette generator →