#1D338F#1D338F

#1D338F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.9% C 0.154 H 267.5°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#1D338F
RGB	rgb(29, 51, 143)
HSL	hsl(228, 66%, 34%)
HSV	hsv(228, 80%, 56%)
CMYK	cmyk(79.7%, 64.3%, 0%, 43.9%)
CIE-LAB	lab(25.60, 26.70, -53.18)
CIE-LCH	lch(25.60, 59.51, 296.66°)
OKLab	oklab(36.89% -0.0067 -0.1538)
OKLCH	oklch(36.89% 0.154 267.5)
XYZ	xyz(6.6467, 4.6113, 26.5210)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D338F #8F791D

analogous

#1D6C8F #1D338F #401D8F

triadic

#1D338F #8F1D33 #338F1D

tetradic

#1D338F #8F1D6C #8F791D #1D8F40

square

#1D338F #8F1D6C #8F791D #1D8F40

split-complementary

#1D338F #8F401D #6C8F1D

monochromatic

#080F29 #13215C #1D338F #2745C2 #4C67DB

Accessibility & contrast

On white

10.92

#1D338F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1D338F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D338F

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D338F	#FFFFFF	#000000	##FFFFFF
##1D338F	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004292

Deuteranopia (green-blind)

#00378D

Tritanopia (blue-blind)

#004B5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d338f;
/* rgb */ color: rgb(29, 51, 143);
/* oklch */ color: oklch(36.9% 0.154 267.5);

Tailwind

colors: {
  custom: {
    50: '#6d6ab1',
    500: '#1d338f',
    950: '#000000',
  },
}

SCSS

$custom: #1d338f;
$custom-light: #6d6ab1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d338f",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 143
  },
  "hsl": {
    "h": 228.421,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.36893,
    "c": 0.15399,
    "h": 267.5
  },
  "luminance": 0.04612
}

Semantic roles & 50–950 ramp

primary

#1D338F

secondary

#BDA74B

accent

#C83FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1D338F

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

Preview Lab → · Contrast checker → · Palette generator →