#1C4083#1C4083

#1C4083 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.6% C 0.120 H 261.4°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1C4083
RGB	rgb(28, 64, 131)
HSL	hsl(219, 65%, 31%)
HSV	hsv(219, 79%, 51%)
CMYK	cmyk(78.6%, 51.1%, 0%, 48.6%)
CIE-LAB	lab(28.25, 12.75, -41.42)
CIE-LCH	lch(28.25, 43.34, 287.11°)
OKLab	oklab(38.57% -0.0179 -0.1191)
OKLCH	oklch(38.57% 0.12 261.4)
XYZ	xyz(6.4075, 5.5516, 22.2022)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4083 #835F1C

analogous

#1C7383 #1C4083 #2B1C83

triadic

#1C4083 #831C40 #40831C

tetradic

#1C4083 #831C73 #835F1C #1C832B

square

#1C4083 #831C73 #835F1C #1C832B

split-complementary

#1C4083 #832B1C #73831C

monochromatic

#060F1E #112751 #1C4083 #2759B5 #4376D7

Accessibility & contrast

On white

9.95

#1C4083 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1C4083 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4083

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4083	#FFFFFF	#000000	##FFFFFF
##1C4083	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184885

Deuteranopia (green-blind)

#003E82

Tritanopia (blue-blind)

#00505B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c4083;
/* rgb */ color: rgb(28, 64, 131);
/* oklch */ color: oklch(38.6% 0.120 261.4);

Tailwind

colors: {
  custom: {
    50: '#6974a7',
    500: '#1c4083',
    950: '#000000',
  },
}

SCSS

$custom: #1c4083;
$custom-light: #6974a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4083",
  "rgb": {
    "r": 28,
    "g": 64,
    "b": 131
  },
  "hsl": {
    "h": 219.029,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38573,
    "c": 0.12042,
    "h": 261.4
  },
  "luminance": 0.05552
}

Semantic roles & 50–950 ramp

primary

#1C4083

secondary

#B68F45

accent

#AD40E8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C4083

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

Preview Lab → · Contrast checker → · Palette generator →