#1D2B78#1D2B78

#1D2B78 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.1% C 0.132 H 269.7°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#1D2B78
RGB	rgb(29, 43, 120)
HSL	hsl(231, 61%, 29%)
HSV	hsv(231, 76%, 47%)
CMYK	cmyk(75.8%, 64.2%, 0%, 52.9%)
CIE-LAB	lab(21.37, 23.20, -45.65)
CIE-LCH	lch(21.37, 51.21, 296.94°)
OKLab	oklab(33.13% -0.0007 -0.1319)
OKLCH	oklch(33.13% 0.132 269.7)
XYZ	xyz(4.7596, 3.3445, 18.1604)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2B78 #786A1D

analogous

#1D5978 #1D2B78 #3D1D78

triadic

#1D2B78 #781D2B #2B781D

tetradic

#1D2B78 #781D59 #786A1D #1D783D

square

#1D2B78 #781D59 #786A1D #1D783D

split-complementary

#1D2B78 #783D1D #59781D

monochromatic

#060919 #111947 #1D2B78 #293DA9 #3F55D1

Accessibility & contrast

On white

12.58

#1D2B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1D2B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2B78

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2B78	#FFFFFF	#000000	##FFFFFF
##1D2B78	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00387B

Deuteranopia (green-blind)

#002F77

Tritanopia (blue-blind)

#003F4D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d2b78;
/* rgb */ color: rgb(29, 43, 120);
/* oklch */ color: oklch(33.1% 0.132 269.7);

Tailwind

colors: {
  custom: {
    50: '#6864a0',
    500: '#1d2b78',
    950: '#000000',
  },
}

SCSS

$custom: #1d2b78;
$custom-light: #6864a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2b78",
  "rgb": {
    "r": 29,
    "g": 43,
    "b": 120
  },
  "hsl": {
    "h": 230.769,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.33126,
    "c": 0.13186,
    "h": 269.7
  },
  "luminance": 0.03345
}

Semantic roles & 50–950 ramp

primary

#1D2B78

secondary

#AC9C45

accent

#CB44E4

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #1D2B78

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

Preview Lab → · Contrast checker → · Palette generator →