#1C4FA4#1C4FA4

#1C4FA4 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.5% C 0.148 H 260.2°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#1C4FA4
RGB	rgb(28, 79, 164)
HSL	hsl(218, 71%, 38%)
HSV	hsv(218, 83%, 64%)
CMYK	cmyk(82.9%, 51.8%, 0%, 35.7%)
CIE-LAB	lab(35.04, 15.84, -50.60)
CIE-LCH	lch(35.04, 53.02, 287.38°)
OKLab	oklab(44.52% -0.0252 -0.1458)
OKLCH	oklch(44.52% 0.148 260.2)
XYZ	xyz(9.9733, 8.5180, 36.2333)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4FA4 #A4711C

analogous

#1C93A4 #1C4FA4 #2D1CA4

triadic

#1C4FA4 #A41C4F #4FA41C

tetradic

#1C4FA4 #A41C93 #A4711C #1CA42D

square

#1C4FA4 #A41C93 #A4711C #1CA42D

split-complementary

#1C4FA4 #A42D1C #93A41C

monochromatic

#0A1D3B #133670 #1C4FA4 #2568D8 #588CE2

Accessibility & contrast

On white

7.77

#1C4FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1C4FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4FA4

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4FA4	#FFFFFF	#000000	##FFFFFF
##1C4FA4	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1659A7

Deuteranopia (green-blind)

#004DA2

Tritanopia (blue-blind)

#006472

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1c4fa4;
/* rgb */ color: rgb(28, 79, 164);
/* oklch */ color: oklch(44.5% 0.148 260.2);

Tailwind

colors: {
  custom: {
    50: '#707fc0',
    500: '#1c4fa4',
    950: '#000000',
  },
}

SCSS

$custom: #1c4fa4;
$custom-light: #707fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4fa4",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 164
  },
  "hsl": {
    "h": 217.5,
    "s": 70.833,
    "l": 37.647
  },
  "oklch": {
    "l": 0.4452,
    "c": 0.14793,
    "h": 260.2
  },
  "luminance": 0.08519
}

Semantic roles & 50–950 ramp

primary

#1C4FA4

secondary

#C69C56

accent

#AA3AEE

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1C4FA4

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

Preview Lab → · Contrast checker → · Palette generator →