#1C3FA5#1C3FA5

#1C3FA5 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.169 H 265.0°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#1C3FA5
RGB	rgb(28, 63, 165)
HSL	hsl(225, 71%, 38%)
HSV	hsv(225, 83%, 65%)
CMYK	cmyk(83%, 61.8%, 0%, 35.3%)
CIE-LAB	lab(30.68, 27.06, -58.28)
CIE-LCH	lch(30.68, 64.26, 294.91°)
OKLab	oklab(41.26% -0.0147 -0.1686)
OKLCH	oklch(41.26% 0.169 265)
XYZ	xyz(9.0455, 6.5174, 36.3713)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3FA5 #A5821C

analogous

#1C83A5 #1C3FA5 #3E1CA5

triadic

#1C3FA5 #A51C3F #3FA51C

tetradic

#1C3FA5 #A51C83 #A5821C #1CA53E

square

#1C3FA5 #A51C83 #A5821C #1CA53E

split-complementary

#1C3FA5 #A53E1C #83A51C

monochromatic

#0A173C #132B71 #1C3FA5 #2553D9 #597CE3

Accessibility & contrast

On white

9.12

#1C3FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1C3FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3FA5

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3FA5	#FFFFFF	#000000	##FFFFFF
##1C3FA5	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA8

Deuteranopia (green-blind)

#0042A3

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1c3fa5;
/* rgb */ color: rgb(28, 63, 165);
/* oklch */ color: oklch(41.3% 0.169 265.0);

Tailwind

colors: {
  custom: {
    50: '#7273c1',
    500: '#1c3fa5',
    950: '#000000',
  },
}

SCSS

$custom: #1c3fa5;
$custom-light: #7273c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3fa5",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 165
  },
  "hsl": {
    "h": 224.672,
    "s": 70.984,
    "l": 37.843
  },
  "oklch": {
    "l": 0.41257,
    "c": 0.16929,
    "h": 265
  },
  "luminance": 0.06519
}

Semantic roles & 50–950 ramp

primary

#1C3FA5

secondary

#C6AA56

accent

#C03AEE

background

#F7F6FC

surface

#EDECF8

border

#C8C7D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C3FA5

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

Preview Lab → · Contrast checker → · Palette generator →