#1D3B79#1D3B79

#1D3B79 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.112 H 262.7°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#1D3B79
RGB	rgb(29, 59, 121)
HSL	hsl(220, 61%, 29%)
HSV	hsv(220, 76%, 47%)
CMYK	cmyk(76%, 51.2%, 0%, 52.5%)
CIE-LAB	lab(26.07, 12.32, -38.67)
CIE-LCH	lch(26.07, 40.59, 287.67°)
OKLab	oklab(36.68% -0.0141 -0.1111)
OKLCH	oklch(36.68% 0.112 262.7)
XYZ	xyz(5.5206, 4.7690, 18.7150)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3B79 #795B1D

analogous

#1D6979 #1D3B79 #2D1D79

triadic

#1D3B79 #791D3B #3B791D

tetradic

#1D3B79 #791D69 #795B1D #1D792D

square

#1D3B79 #791D69 #795B1D #1D792D

split-complementary

#1D3B79 #792D1D #69791D

monochromatic

#060C19 #112348 #1D3B79 #2953AA #3F6FD1

Accessibility & contrast

On white

10.75

#1D3B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1D3B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3B79

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3B79	#FFFFFF	#000000	##FFFFFF
##1D3B79	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17427B

Deuteranopia (green-blind)

#003A78

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d3b79;
/* rgb */ color: rgb(29, 59, 121);
/* oklch */ color: oklch(36.7% 0.112 262.7);

Tailwind

colors: {
  custom: {
    50: '#6770a0',
    500: '#1d3b79',
    950: '#000000',
  },
}

SCSS

$custom: #1d3b79;
$custom-light: #6770a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3b79",
  "rgb": {
    "r": 29,
    "g": 59,
    "b": 121
  },
  "hsl": {
    "h": 220.435,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36683,
    "c": 0.11197,
    "h": 262.7
  },
  "luminance": 0.0477
}

Semantic roles & 50–950 ramp

primary

#1D3B79

secondary

#AD8B45

accent

#B043E4

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #1D3B79

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

Preview Lab → · Contrast checker → · Palette generator →