#1D4178#1D4178

#1D4178 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.0% C 0.103 H 258.8°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#1D4178
RGB	rgb(29, 65, 120)
HSL	hsl(216, 61%, 29%)
HSV	hsv(216, 76%, 47%)
CMYK	cmyk(75.8%, 45.8%, 0%, 52.9%)
CIE-LAB	lab(27.84, 7.73, -35.20)
CIE-LCH	lch(27.84, 36.04, 282.39°)
OKLab	oklab(38.02% -0.02 -0.1007)
OKLCH	oklch(38.02% 0.103 258.8)
XYZ	xyz(5.7859, 5.3972, 18.5025)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4178 #78541D

analogous

#1D6F78 #1D4178 #271D78

triadic

#1D4178 #781D41 #41781D

tetradic

#1D4178 #781D6F #78541D #1D7827

square

#1D4178 #781D6F #78541D #1D7827

split-complementary

#1D4178 #78271D #6F781D

monochromatic

#060D19 #112647 #1D4178 #295CA9 #3F78D1

Accessibility & contrast

On white

10.10

#1D4178 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1D4178 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4178

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4178	#FFFFFF	#000000	##FFFFFF
##1D4178	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26467A

Deuteranopia (green-blind)

#143E77

Tritanopia (blue-blind)

#004E56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d4178;
/* rgb */ color: rgb(29, 65, 120);
/* oklch */ color: oklch(38.0% 0.103 258.8);

Tailwind

colors: {
  custom: {
    50: '#66759f',
    500: '#1d4178',
    950: '#000000',
  },
}

SCSS

$custom: #1d4178;
$custom-light: #66759f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4178",
  "rgb": {
    "r": 29,
    "g": 65,
    "b": 120
  },
  "hsl": {
    "h": 216.264,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.38022,
    "c": 0.1027,
    "h": 258.8
  },
  "luminance": 0.05398
}

Semantic roles & 50–950 ramp

primary

#1D4178

secondary

#AC8345

accent

#A544E4

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #1D4178

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

Preview Lab → · Contrast checker → · Palette generator →