#1D4B90#1D4B90

#1D4B90 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.1% C 0.125 H 258.7°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B90
RGB	rgb(29, 75, 144)
HSL	hsl(216, 66%, 34%)
HSV	hsv(216, 80%, 56%)
CMYK	cmyk(79.9%, 47.9%, 0%, 43.5%)
CIE-LAB	lab(32.49, 10.60, -42.61)
CIE-LCH	lch(32.49, 43.90, 283.97°)
OKLab	oklab(42.13% -0.0245 -0.1223)
OKLCH	oklch(42.13% 0.125 258.7)
XYZ	xyz(8.0550, 7.3060, 27.3658)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B90 #90621D

analogous

#1D8590 #1D4B90 #291D90

triadic

#1D4B90 #901D4B #4B901D

tetradic

#1D4B90 #901D85 #90621D #1D9029

square

#1D4B90 #901D85 #90621D #1D9029

split-complementary

#1D4B90 #90291D #85901D

monochromatic

#08162A #13305D #1D4B90 #2766C3 #4C85DB

Accessibility & contrast

On white

8.53

#1D4B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1D4B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B90

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B90	#FFFFFF	#000000	##FFFFFF
##1D4B90	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#255293

Deuteranopia (green-blind)

#05488F

Tritanopia (blue-blind)

#005B66

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d4b90;
/* rgb */ color: rgb(29, 75, 144);
/* oklch */ color: oklch(42.1% 0.125 258.7);

Tailwind

colors: {
  custom: {
    50: '#6c7cb1',
    500: '#1d4b90',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b90;
$custom-light: #6c7cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b90",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 144
  },
  "hsl": {
    "h": 216,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4213,
    "c": 0.12476,
    "h": 258.7
  },
  "luminance": 0.07307
}

Semantic roles & 50–950 ramp

primary

#1D4B90

secondary

#BD904B

accent

#A53EE9

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4B90

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

Preview Lab → · Contrast checker → · Palette generator →