#1D4991#1D4991

#1D4991 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 41.7% C 0.129 H 259.9°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D4991
RGB	rgb(29, 73, 145)
HSL	hsl(217, 67%, 34%)
HSV	hsv(217, 80%, 57%)
CMYK	cmyk(80%, 49.7%, 0%, 43.1%)
CIE-LAB	lab(31.97, 12.36, -44.07)
CIE-LCH	lch(31.97, 45.77, 285.67°)
OKLab	oklab(41.75% -0.0227 -0.1267)
OKLCH	oklch(41.75% 0.129 259.9)
XYZ	xyz(7.9982, 7.0697, 27.7256)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4991 #91651D

analogous

#1D8391 #1D4991 #2B1D91

triadic

#1D4991 #911D49 #49911D

tetradic

#1D4991 #911D83 #91651D #1D912B

square

#1D4991 #911D83 #91651D #1D912B

split-complementary

#1D4991 #912B1D #83911D

monochromatic

#09162B #132F5E #1D4991 #2763C4 #4D83DB

Accessibility & contrast

On white

8.70

#1D4991 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1D4991 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4991

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4991	#FFFFFF	#000000	##FFFFFF
##1D4991	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5194

Deuteranopia (green-blind)

#004690

Tritanopia (blue-blind)

#005A66

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1d4991;
/* rgb */ color: rgb(29, 73, 145);
/* oklch */ color: oklch(41.7% 0.129 259.9);

Tailwind

colors: {
  custom: {
    50: '#6c7bb2',
    500: '#1d4991',
    950: '#000000',
  },
}

SCSS

$custom: #1d4991;
$custom-light: #6c7bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4991",
  "rgb": {
    "r": 29,
    "g": 73,
    "b": 145
  },
  "hsl": {
    "h": 217.241,
    "s": 66.667,
    "l": 34.118
  },
  "oklch": {
    "l": 0.41745,
    "c": 0.12868,
    "h": 259.9
  },
  "luminance": 0.07071
}

Semantic roles & 50–950 ramp

primary

#1D4991

secondary

#BE934C

accent

#A93EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4991

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

Preview Lab → · Contrast checker → · Palette generator →