#1D4B8E#1D4B8E

#1D4B8E is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.0% C 0.122 H 258.2°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B8E
RGB	rgb(29, 75, 142)
HSL	hsl(216, 66%, 34%)
HSV	hsv(216, 80%, 56%)
CMYK	cmyk(79.6%, 47.2%, 0%, 44.3%)
CIE-LAB	lab(32.36, 9.79, -41.60)
CIE-LCH	lch(32.36, 42.74, 283.25°)
OKLab	oklab(41.98% -0.0249 -0.1194)
OKLCH	oklch(41.98% 0.122 258.2)
XYZ	xyz(7.9035, 7.2454, 26.5679)
Luminance	0.0725 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B8E #8E601D

analogous

#1D838E #1D4B8E #271D8E

triadic

#1D4B8E #8E1D4B #4B8E1D

tetradic

#1D4B8E #8E1D83 #8E601D #1D8E27

square

#1D4B8E #8E1D83 #8E601D #1D8E27

split-complementary

#1D4B8E #8E271D #838E1D

monochromatic

#081528 #13305B #1D4B8E #2766C1 #4B85DA

Accessibility & contrast

On white

8.57

#1D4B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1D4B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B8E

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B8E	#FFFFFF	#000000	##FFFFFF
##1D4B8E	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#275291

Deuteranopia (green-blind)

#0B478D

Tritanopia (blue-blind)

#005B65

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d4b8e;
/* rgb */ color: rgb(29, 75, 142);
/* oklch */ color: oklch(42.0% 0.122 258.2);

Tailwind

colors: {
  custom: {
    50: '#6b7caf',
    500: '#1d4b8e',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b8e;
$custom-light: #6b7caf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b8e",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 142
  },
  "hsl": {
    "h": 215.575,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.41983,
    "c": 0.12193,
    "h": 258.2
  },
  "luminance": 0.07246
}

Semantic roles & 50–950 ramp

primary

#1D4B8E

secondary

#BD8E4A

accent

#A43FE9

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1D4B8E

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

Preview Lab → · Contrast checker → · Palette generator →