#1D4B8D#1D4B8D

#1D4B8D is a dark, vivid blue. Relative luminance 0.072; OKLCH L 41.9% C 0.121 H 258.0°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B8D
RGB	rgb(29, 75, 141)
HSL	hsl(215, 66%, 33%)
HSV	hsv(215, 79%, 55%)
CMYK	cmyk(79.4%, 46.8%, 0%, 44.7%)
CIE-LAB	lab(32.29, 9.39, -41.09)
CIE-LCH	lch(32.29, 42.15, 282.87°)
OKLab	oklab(41.91% -0.025 -0.1179)
OKLCH	oklch(41.91% 0.121 258)
XYZ	xyz(7.8287, 7.2155, 26.1743)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B8D #8D5F1D

analogous

#1D838D #1D4B8D #271D8D

triadic

#1D4B8D #8D1D4B #4B8D1D

tetradic

#1D4B8D #8D1D83 #8D5F1D #1D8D27

square

#1D4B8D #8D1D83 #8D5F1D #1D8D27

split-complementary

#1D4B8D #8D271D #838D1D

monochromatic

#081527 #13305A #1D4B8D #2766C0 #4B85DA

Accessibility & contrast

On white

8.60

#1D4B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#1D4B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B8D

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B8D	#FFFFFF	#000000	##FFFFFF
##1D4B8D	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28518F

Deuteranopia (green-blind)

#0E478C

Tritanopia (blue-blind)

#005B65

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d4b8d;
/* rgb */ color: rgb(29, 75, 141);
/* oklch */ color: oklch(41.9% 0.121 258.0);

Tailwind

colors: {
  custom: {
    50: '#6b7caf',
    500: '#1d4b8d',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b8d;
$custom-light: #6b7caf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b8d",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 141
  },
  "hsl": {
    "h": 215.357,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.4191,
    "c": 0.12051,
    "h": 258
  },
  "luminance": 0.07216
}

Semantic roles & 50–950 ramp

primary

#1D4B8D

secondary

#BC8D4A

accent

#A33FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1D4B8D

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

Preview Lab → · Contrast checker → · Palette generator →