#1D338C#1D338C

#1D338C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.6% C 0.150 H 267.5°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#1D338C
RGB	rgb(29, 51, 140)
HSL	hsl(228, 66%, 33%)
HSV	hsv(228, 79%, 55%)
CMYK	cmyk(79.3%, 63.6%, 0%, 45.1%)
CIE-LAB	lab(25.33, 25.52, -51.77)
CIE-LCH	lch(25.33, 57.72, 296.25°)
OKLab	oklab(36.61% -0.0066 -0.1497)
OKLCH	oklch(36.61% 0.15 267.5)
XYZ	xyz(6.4225, 4.5216, 25.3401)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D338C #8C761D

analogous

#1D6A8C #1D338C #3E1D8C

triadic

#1D338C #8C1D33 #338C1D

tetradic

#1D338C #8C1D6A #8C761D #1D8C3E

square

#1D338C #8C1D6A #8C761D #1D8C3E

split-complementary

#1D338C #8C3E1D #6A8C1D

monochromatic

#080E27 #122159 #1D338C #2845BF #4A66D9

Accessibility & contrast

On white

11.03

#1D338C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1D338C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D338C

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D338C	#FFFFFF	#000000	##FFFFFF
##1D338C	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418F

Deuteranopia (green-blind)

#00378A

Tritanopia (blue-blind)

#004A5A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d338c;
/* rgb */ color: rgb(29, 51, 140);
/* oklch */ color: oklch(36.6% 0.150 267.5);

Tailwind

colors: {
  custom: {
    50: '#6c6aae',
    500: '#1d338c',
    950: '#000000',
  },
}

SCSS

$custom: #1d338c;
$custom-light: #6c6aae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d338c",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 140
  },
  "hsl": {
    "h": 228.108,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.36608,
    "c": 0.14985,
    "h": 267.5
  },
  "luminance": 0.04522
}

Semantic roles & 50–950 ramp

primary

#1D338C

secondary

#BCA549

accent

#C73FE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D338C

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

Preview Lab → · Contrast checker → · Palette generator →