#1C3F82#1C3F82

#1C3F82 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.3% C 0.120 H 261.8°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#1C3F82
RGB	rgb(28, 63, 130)
HSL	hsl(219, 65%, 31%)
HSV	hsv(219, 78%, 51%)
CMYK	cmyk(78.5%, 51.5%, 0%, 49%)
CIE-LAB	lab(27.88, 13.04, -41.40)
CIE-LCH	lch(27.88, 43.40, 287.49°)
OKLab	oklab(38.27% -0.0172 -0.119)
OKLCH	oklch(38.27% 0.12 261.8)
XYZ	xyz(6.2842, 5.4129, 21.8284)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3F82 #825F1C

analogous

#1C7282 #1C3F82 #2C1C82

triadic

#1C3F82 #821C3F #3F821C

tetradic

#1C3F82 #821C72 #825F1C #1C822C

square

#1C3F82 #821C72 #825F1C #1C822C

split-complementary

#1C3F82 #822C1C #72821C

monochromatic

#060E1D #112750 #1C3F82 #2757B4 #4275D6

Accessibility & contrast

On white

10.08

#1C3F82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1C3F82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3F82

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3F82	#FFFFFF	#000000	##FFFFFF
##1C3F82	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174784

Deuteranopia (green-blind)

#003D81

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1c3f82;
/* rgb */ color: rgb(28, 63, 130);
/* oklch */ color: oklch(38.3% 0.120 261.8);

Tailwind

colors: {
  custom: {
    50: '#6873a7',
    500: '#1c3f82',
    950: '#000000',
  },
}

SCSS

$custom: #1c3f82;
$custom-light: #6873a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3f82",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 130
  },
  "hsl": {
    "h": 219.412,
    "s": 64.557,
    "l": 30.98
  },
  "oklch": {
    "l": 0.38266,
    "c": 0.12027,
    "h": 261.8
  },
  "luminance": 0.05414
}

Semantic roles & 50–950 ramp

primary

#1C3F82

secondary

#B58F44

accent

#AE40E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C3F82

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

Preview Lab → · Contrast checker → · Palette generator →