#1D3F90#1D3F90

#1D3F90 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.4% C 0.140 H 263.9°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D3F90
RGB	rgb(29, 63, 144)
HSL	hsl(222, 66%, 34%)
HSV	hsv(222, 80%, 56%)
CMYK	cmyk(79.9%, 56.3%, 0%, 43.5%)
CIE-LAB	lab(28.98, 18.83, -48.29)
CIE-LCH	lch(28.98, 51.83, 291.30°)
OKLab	oklab(39.45% -0.0149 -0.1393)
OKLCH	oklch(39.45% 0.14 263.9)
XYZ	xyz(7.3165, 5.8290, 27.1197)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3F90 #906E1D

analogous

#1D7990 #1D3F90 #351D90

triadic

#1D3F90 #901D3F #3F901D

tetradic

#1D3F90 #901D79 #906E1D #1D9035

square

#1D3F90 #901D79 #906E1D #1D9035

split-complementary

#1D3F90 #90351D #79901D

monochromatic

#08122A #13295D #1D3F90 #2755C3 #4C77DB

Accessibility & contrast

On white

9.70

#1D3F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1D3F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3F90

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3F90	#FFFFFF	#000000	##FFFFFF
##1D3F90	1.00	9.70	2.17	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A93

Deuteranopia (green-blind)

#003F8E

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d3f90;
/* rgb */ color: rgb(29, 63, 144);
/* oklch */ color: oklch(39.4% 0.140 263.9);

Tailwind

colors: {
  custom: {
    50: '#6c73b1',
    500: '#1d3f90',
    950: '#000000',
  },
}

SCSS

$custom: #1d3f90;
$custom-light: #6c73b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3f90",
  "rgb": {
    "r": 29,
    "g": 63,
    "b": 144
  },
  "hsl": {
    "h": 222.261,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.39445,
    "c": 0.14008,
    "h": 263.9
  },
  "luminance": 0.0583
}

Semantic roles & 50–950 ramp

primary

#1D3F90

secondary

#BD9C4B

accent

#B73EE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1D3F90

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

Preview Lab → · Contrast checker → · Palette generator →