#1C4584#1C4584

#1C4584 is a dark, moderate blue. Relative luminance 0.062; OKLCH L 39.8% C 0.115 H 258.9°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#1C4584
RGB	rgb(28, 69, 132)
HSL	hsl(216, 65%, 31%)
HSV	hsv(216, 79%, 52%)
CMYK	cmyk(78.8%, 47.7%, 0%, 48.2%)
CIE-LAB	lab(29.83, 9.71, -39.50)
CIE-LCH	lch(29.83, 40.67, 283.81°)
OKLab	oklab(39.81% -0.0221 -0.1133)
OKLCH	oklch(39.81% 0.115 258.9)
XYZ	xyz(6.7703, 6.1683, 22.6591)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4584 #845B1C

analogous

#1C7984 #1C4584 #271C84

triadic

#1C4584 #841C45 #45841C

tetradic

#1C4584 #841C79 #845B1C #1C8427

square

#1C4584 #841C79 #845B1C #1C8427

split-complementary

#1C4584 #84271C #79841C

monochromatic

#07101F #112B52 #1C4584 #275FB6 #437ED7

Accessibility & contrast

On white

9.40

#1C4584 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1C4584 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4584

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4584	#FFFFFF	#000000	##FFFFFF
##1C4584	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234B86

Deuteranopia (green-blind)

#094283

Tritanopia (blue-blind)

#00545E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1c4584;
/* rgb */ color: rgb(28, 69, 132);
/* oklch */ color: oklch(39.8% 0.115 258.9);

Tailwind

colors: {
  custom: {
    50: '#6978a8',
    500: '#1c4584',
    950: '#000000',
  },
}

SCSS

$custom: #1c4584;
$custom-light: #6978a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4584",
  "rgb": {
    "r": 28,
    "g": 69,
    "b": 132
  },
  "hsl": {
    "h": 216.346,
    "s": 65,
    "l": 31.373
  },
  "oklch": {
    "l": 0.39809,
    "c": 0.11546,
    "h": 258.9
  },
  "luminance": 0.06169
}

Semantic roles & 50–950 ramp

primary

#1C4584

secondary

#B78A45

accent

#A640E8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1C4584

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

Preview Lab → · Contrast checker → · Palette generator →