#1C3582#1C3582

#1C3582 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.1% C 0.133 H 266.1°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#1C3582
RGB	rgb(28, 53, 130)
HSL	hsl(225, 65%, 31%)
HSV	hsv(225, 78%, 51%)
CMYK	cmyk(78.5%, 59.2%, 0%, 49%)
CIE-LAB	lab(24.96, 20.05, -46.12)
CIE-LCH	lch(24.96, 50.29, 293.49°)
OKLab	oklab(36.06% -0.0091 -0.1331)
OKLCH	oklch(36.06% 0.133 266.1)
XYZ	xyz(5.7798, 4.4041, 21.6602)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3582 #82691C

analogous

#1C6882 #1C3582 #361C82

triadic

#1C3582 #821C35 #35821C

tetradic

#1C3582 #821C68 #82691C #1C8236

square

#1C3582 #821C68 #82691C #1C8236

split-complementary

#1C3582 #82361C #68821C

monochromatic

#060C1D #112050 #1C3582 #274AB4 #4266D6

Accessibility & contrast

On white

11.16

#1C3582 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1C3582 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3582

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3582	#FFFFFF	#000000	##FFFFFF
##1C3582	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004085

Deuteranopia (green-blind)

#003780

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c3582;
/* rgb */ color: rgb(28, 53, 130);
/* oklch */ color: oklch(36.1% 0.133 266.1);

Tailwind

colors: {
  custom: {
    50: '#696ba7',
    500: '#1c3582',
    950: '#000000',
  },
}

SCSS

$custom: #1c3582;
$custom-light: #696ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3582",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 130
  },
  "hsl": {
    "h": 225.294,
    "s": 64.557,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36058,
    "c": 0.13343,
    "h": 266.1
  },
  "luminance": 0.04405
}

Semantic roles & 50–950 ramp

primary

#1C3582

secondary

#B59A44

accent

#BF40E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C3582

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

Preview Lab → · Contrast checker → · Palette generator →