#1D228C#1D228C

#1D228C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.6% C 0.170 H 270.9°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#1D228C
RGB	rgb(29, 34, 140)
HSL	hsl(237, 66%, 33%)
HSV	hsv(237, 79%, 55%)
CMYK	cmyk(79.3%, 75.7%, 0%, 45.1%)
CIE-LAB	lab(21.20, 36.62, -58.55)
CIE-LCH	lch(21.20, 69.06, 302.03°)
OKLab	oklab(33.61% 0.0025 -0.1695)
OKLCH	oklch(33.61% 0.17 270.9)
XYZ	xyz(5.8107, 3.2981, 25.1362)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D228C #8C871D

analogous

#1D598C #1D228C #4F1D8C

triadic

#1D228C #8C1D22 #228C1D

tetradic

#1D228C #8C1D59 #8C871D #1D8C4F

square

#1D228C #8C1D59 #8C871D #1D8C4F

split-complementary

#1D228C #8C4F1D #598C1D

monochromatic

#080927 #121659 #1D228C #282EBF #4A50D9

Accessibility & contrast

On white

12.65

#1D228C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1D228C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D228C

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D228C	#FFFFFF	#000000	##FFFFFF
##1D228C	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388F

Deuteranopia (green-blind)

#002D8A

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d228c;
/* rgb */ color: rgb(29, 34, 140);
/* oklch */ color: oklch(33.6% 0.170 270.9);

Tailwind

colors: {
  custom: {
    50: '#6e5eaf',
    500: '#1d228c',
    950: '#000000',
  },
}

SCSS

$custom: #1d228c;
$custom-light: #6e5eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d228c",
  "rgb": {
    "r": 29,
    "g": 34,
    "b": 140
  },
  "hsl": {
    "h": 237.297,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33609,
    "c": 0.16957,
    "h": 270.9
  },
  "luminance": 0.03299
}

Semantic roles & 50–950 ramp

primary

#1D228C

secondary

#BCB749

accent

#E13FE9

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D228C

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

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