#1C4FAB#1C4FAB

#1C4FAB is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.1% C 0.158 H 261.1°. Best body text is #FFFFFF at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#1C4FAB
RGB	rgb(28, 79, 171)
HSL	hsl(219, 72%, 39%)
HSV	hsv(219, 84%, 67%)
CMYK	cmyk(83.6%, 53.8%, 0%, 32.9%)
CIE-LAB	lab(35.55, 18.63, -53.94)
CIE-LCH	lch(35.55, 57.07, 289.06°)
OKLab	oklab(45.08% -0.0244 -0.1556)
OKLCH	oklch(45.08% 0.158 261.1)
XYZ	xyz(10.6229, 8.7778, 39.6546)
Luminance	0.0878 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4FAB #AB781C

analogous

#1C97AB #1C4FAB #301CAB

triadic

#1C4FAB #AB1C4F #4FAB1C

tetradic

#1C4FAB #AB1C97 #AB781C #1CAB30

square

#1C4FAB #AB1C97 #AB781C #1CAB30

split-complementary

#1C4FAB #AB301C #97AB1C

monochromatic

#0B1E42 #133776 #1C4FAB #2868DC #5D8DE4

Accessibility & contrast

On white

7.62

#1C4FAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#1C4FAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4FAB

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4FAB	#FFFFFF	#000000	##FFFFFF
##1C4FAB	1.00	7.62	2.76	7.62
#FFFFFF	7.62	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#025AAE

Deuteranopia (green-blind)

#004DA9

Tritanopia (blue-blind)

#006675

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1c4fab;
/* rgb */ color: rgb(28, 79, 171);
/* oklch */ color: oklch(45.1% 0.158 261.1);

Tailwind

colors: {
  custom: {
    50: '#727fc5',
    500: '#1c4fab',
    950: '#000000',
  },
}

SCSS

$custom: #1c4fab;
$custom-light: #727fc5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4fab",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 171
  },
  "hsl": {
    "h": 218.601,
    "s": 71.859,
    "l": 39.02
  },
  "oklch": {
    "l": 0.45075,
    "c": 0.15752,
    "h": 261.1
  },
  "luminance": 0.08779
}

Semantic roles & 50–950 ramp

primary

#1C4FAB

secondary

#C9A15A

accent

#AE39EF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1C4FAB

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

Preview Lab → · Contrast checker → · Palette generator →