#1D4580#1D4580

#1D4580 is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.6% C 0.109 H 258.3°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#1D4580
RGB	rgb(29, 69, 128)
HSL	hsl(216, 63%, 31%)
HSV	hsv(216, 77%, 50%)
CMYK	cmyk(77.3%, 46.1%, 0%, 49.8%)
CIE-LAB	lab(29.60, 8.22, -37.38)
CIE-LCH	lch(29.60, 38.27, 282.41°)
OKLab	oklab(39.56% -0.0222 -0.1071)
OKLCH	oklch(39.56% 0.109 258.3)
XYZ	xyz(6.5297, 6.0752, 21.2464)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4580 #80581D

analogous

#1D7680 #1D4580 #271D80

triadic

#1D4580 #801D45 #45801D

tetradic

#1D4580 #801D76 #80581D #1D8027

square

#1D4580 #801D76 #80581D #1D8027

split-complementary

#1D4580 #80271D #76801D

monochromatic

#060F1C #122A4E #1D4580 #2860B2 #437ED4

Accessibility & contrast

On white

9.48

#1D4580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1D4580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4580

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4580	#FFFFFF	#000000	##FFFFFF
##1D4580	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274B82

Deuteranopia (green-blind)

#13427F

Tritanopia (blue-blind)

#00535C

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d4580;
/* rgb */ color: rgb(29, 69, 128);
/* oklch */ color: oklch(39.6% 0.109 258.3);

Tailwind

colors: {
  custom: {
    50: '#6878a5',
    500: '#1d4580',
    950: '#000000',
  },
}

SCSS

$custom: #1d4580;
$custom-light: #6878a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4580",
  "rgb": {
    "r": 29,
    "g": 69,
    "b": 128
  },
  "hsl": {
    "h": 215.758,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39555,
    "c": 0.10936,
    "h": 258.3
  },
  "luminance": 0.06076
}

Semantic roles & 50–950 ramp

primary

#1D4580

secondary

#B38745

accent

#A442E6

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D4580

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

Preview Lab → · Contrast checker → · Palette generator →