#1D4C8F#1D4C8F

#1D4C8F is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.3% C 0.122 H 257.9°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#1D4C8F
RGB	rgb(29, 76, 143)
HSL	hsl(215, 66%, 34%)
HSV	hsv(215, 80%, 56%)
CMYK	cmyk(79.7%, 46.9%, 0%, 43.9%)
CIE-LAB	lab(32.73, 9.52, -41.62)
CIE-LCH	lch(32.73, 42.69, 282.88°)
OKLab	oklab(42.29% -0.0255 -0.1194)
OKLCH	oklch(42.29% 0.122 257.9)
XYZ	xyz(8.0472, 7.4123, 26.9879)
Luminance	0.0741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4C8F #8F601D

analogous

#1D858F #1D4C8F #271D8F

triadic

#1D4C8F #8F1D4C #4C8F1D

tetradic

#1D4C8F #8F1D85 #8F601D #1D8F27

square

#1D4C8F #8F1D85 #8F601D #1D8F27

split-complementary

#1D4C8F #8F271D #858F1D

monochromatic

#081629 #13315C #1D4C8F #2767C2 #4C87DB

Accessibility & contrast

On white

8.46

#1D4C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1D4C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4C8F

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4C8F	#FFFFFF	#000000	##FFFFFF
##1D4C8F	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#285392

Deuteranopia (green-blind)

#0D488E

Tritanopia (blue-blind)

#005C66

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1d4c8f;
/* rgb */ color: rgb(29, 76, 143);
/* oklch */ color: oklch(42.3% 0.122 257.9);

Tailwind

colors: {
  custom: {
    50: '#6b7db0',
    500: '#1d4c8f',
    950: '#000000',
  },
}

SCSS

$custom: #1d4c8f;
$custom-light: #6b7db0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4c8f",
  "rgb": {
    "r": 29,
    "g": 76,
    "b": 143
  },
  "hsl": {
    "h": 215.263,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.42288,
    "c": 0.1221,
    "h": 257.9
  },
  "luminance": 0.07413
}

Semantic roles & 50–950 ramp

primary

#1D4C8F

secondary

#BD8E4B

accent

#A33FE9

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1D4C8F

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

Preview Lab → · Contrast checker → · Palette generator →