#1D2A78#1D2A78

#1D2A78 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.133 H 270.0°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#1D2A78
RGB	rgb(29, 42, 120)
HSL	hsl(231, 61%, 29%)
HSV	hsv(231, 76%, 47%)
CMYK	cmyk(75.8%, 65%, 0%, 52.9%)
CIE-LAB	lab(21.10, 23.90, -46.09)
CIE-LCH	lch(21.10, 51.92, 297.40°)
OKLab	oklab(32.93% 0 -0.1332)
OKLCH	oklch(32.93% 0.133 270)
XYZ	xyz(4.7237, 3.2727, 18.1484)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2A78 #786B1D

analogous

#1D5878 #1D2A78 #3E1D78

triadic

#1D2A78 #781D2A #2A781D

tetradic

#1D2A78 #781D58 #786B1D #1D783E

square

#1D2A78 #781D58 #786B1D #1D783E

split-complementary

#1D2A78 #783E1D #58781D

monochromatic

#060919 #111947 #1D2A78 #293BA9 #3F54D1

Accessibility & contrast

On white

12.69

#1D2A78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1D2A78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2A78

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2A78	#FFFFFF	#000000	##FFFFFF
##1D2A78	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377B

Deuteranopia (green-blind)

#002F77

Tritanopia (blue-blind)

#003E4C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d2a78;
/* rgb */ color: rgb(29, 42, 120);
/* oklch */ color: oklch(32.9% 0.133 270.0);

Tailwind

colors: {
  custom: {
    50: '#6863a0',
    500: '#1d2a78',
    950: '#000000',
  },
}

SCSS

$custom: #1d2a78;
$custom-light: #6863a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2a78",
  "rgb": {
    "r": 29,
    "g": 42,
    "b": 120
  },
  "hsl": {
    "h": 231.429,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32927,
    "c": 0.13316,
    "h": 270
  },
  "luminance": 0.03273
}

Semantic roles & 50–950 ramp

primary

#1D2A78

secondary

#AC9D45

accent

#CD44E4

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #1D2A78

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

Preview Lab → · Contrast checker → · Palette generator →