#1D228D#1D228D

#1D228D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.171 H 270.8°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#1D228D
RGB	rgb(29, 34, 141)
HSL	hsl(237, 66%, 33%)
HSV	hsv(237, 79%, 55%)
CMYK	cmyk(79.4%, 75.9%, 0%, 44.7%)
CIE-LAB	lab(21.31, 36.98, -58.99)
CIE-LCH	lch(21.31, 69.62, 302.08°)
OKLab	oklab(33.72% 0.0024 -0.1708)
OKLCH	oklch(33.72% 0.171 270.8)
XYZ	xyz(5.8848, 3.3277, 25.5263)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D228D #8D881D

analogous

#1D5A8D #1D228D #501D8D

triadic

#1D228D #8D1D22 #228D1D

tetradic

#1D228D #8D1D5A #8D881D #1D8D50

square

#1D228D #8D1D5A #8D881D #1D8D50

split-complementary

#1D228D #8D501D #5A8D1D

monochromatic

#080A27 #13165A #1D228D #272EC0 #4B51DA

Accessibility & contrast

On white

12.61

#1D228D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1D228D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D228D

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D228D	#FFFFFF	#000000	##FFFFFF
##1D228D	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003990

Deuteranopia (green-blind)

#002E8B

Tritanopia (blue-blind)

#004156

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d228d;
/* rgb */ color: rgb(29, 34, 141);
/* oklch */ color: oklch(33.7% 0.171 270.8);

Tailwind

colors: {
  custom: {
    50: '#6e5eb0',
    500: '#1d228d',
    950: '#000000',
  },
}

SCSS

$custom: #1d228d;
$custom-light: #6e5eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d228d",
  "rgb": {
    "r": 29,
    "g": 34,
    "b": 141
  },
  "hsl": {
    "h": 237.321,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33721,
    "c": 0.17085,
    "h": 270.8
  },
  "luminance": 0.03328
}

Semantic roles & 50–950 ramp

primary

#1D228D

secondary

#BCB74A

accent

#E13FE9

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090411

muted

#7B7980

Preview Lab

Preview with #1D228D

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

Preview Lab → · Contrast checker → · Palette generator →