#1D228F#1D228F

#1D228F is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.173 H 270.7°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D228F
RGB	rgb(29, 34, 143)
HSL	hsl(237, 66%, 34%)
HSV	hsv(237, 80%, 56%)
CMYK	cmyk(79.7%, 76.2%, 0%, 43.9%)
CIE-LAB	lab(21.53, 37.69, -59.87)
CIE-LCH	lch(21.53, 70.74, 302.19°)
OKLab	oklab(33.95% 0.002 -0.1734)
OKLCH	oklch(33.95% 0.173 270.7)
XYZ	xyz(6.0350, 3.3878, 26.3171)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D228F #8F8A1D

analogous

#1D5B8F #1D228F #511D8F

triadic

#1D228F #8F1D22 #228F1D

tetradic

#1D228F #8F1D5B #8F8A1D #1D8F51

square

#1D228F #8F1D5B #8F8A1D #1D8F51

split-complementary

#1D228F #8F511D #5B8F1D

monochromatic

#080A29 #13165C #1D228F #272EC2 #4C52DB

Accessibility & contrast

On white

12.52

#1D228F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1D228F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D228F

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D228F	#FFFFFF	#000000	##FFFFFF
##1D228F	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003992

Deuteranopia (green-blind)

#002E8D

Tritanopia (blue-blind)

#004257

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1d228f;
/* rgb */ color: rgb(29, 34, 143);
/* oklch */ color: oklch(33.9% 0.173 270.7);

Tailwind

colors: {
  custom: {
    50: '#6f5eb1',
    500: '#1d228f',
    950: '#000000',
  },
}

SCSS

$custom: #1d228f;
$custom-light: #6f5eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d228f",
  "rgb": {
    "r": 29,
    "g": 34,
    "b": 143
  },
  "hsl": {
    "h": 237.368,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.33946,
    "c": 0.17338,
    "h": 270.7
  },
  "luminance": 0.03388
}

Semantic roles & 50–950 ramp

primary

#1D228F

secondary

#BDB84B

accent

#E23FE9

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1D228F

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

Preview Lab → · Contrast checker → · Palette generator →