#1D3998#1D3998

#1D3998 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.159 H 266.2°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1D3998
RGB	rgb(29, 57, 152)
HSL	hsl(226, 68%, 35%)
HSV	hsv(226, 81%, 60%)
CMYK	cmyk(80.9%, 62.5%, 0%, 40.4%)
CIE-LAB	lab(27.99, 26.13, -54.80)
CIE-LCH	lch(27.99, 60.71, 295.49°)
OKLab	oklab(38.91% -0.0105 -0.1585)
OKLCH	oklch(38.91% 0.159 266.2)
XYZ	xyz(7.6353, 5.4536, 30.3499)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3998 #987C1D

analogous

#1D7798 #1D3998 #3E1D98

triadic

#1D3998 #981D39 #39981D

tetradic

#1D3998 #981D77 #987C1D #1D983E

square

#1D3998 #981D77 #987C1D #1D983E

split-complementary

#1D3998 #983E1D #77981D

monochromatic

#091231 #132665 #1D3998 #274CCB #5271DE

Accessibility & contrast

On white

10.04

#1D3998 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1D3998 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3998

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3998	#FFFFFF	#000000	##FFFFFF
##1D3998	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489B

Deuteranopia (green-blind)

#003C96

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3998;
/* rgb */ color: rgb(29, 57, 152);
/* oklch */ color: oklch(38.9% 0.159 266.2);

Tailwind

colors: {
  custom: {
    50: '#6f6fb7',
    500: '#1d3998',
    950: '#000000',
  },
}

SCSS

$custom: #1d3998;
$custom-light: #6f6fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3998",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 152
  },
  "hsl": {
    "h": 226.341,
    "s": 67.956,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38914,
    "c": 0.15886,
    "h": 266.2
  },
  "luminance": 0.05454
}

Semantic roles & 50–950 ramp

primary

#1D3998

secondary

#C1A750

accent

#C33DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1D3998

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

Preview Lab → · Contrast checker → · Palette generator →