#1C4AB3#1C4AB3

#1C4AB3 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.7% C 0.174 H 263.2°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#1C4AB3
RGB	rgb(28, 74, 179)
HSL	hsl(222, 73%, 41%)
HSV	hsv(222, 84%, 70%)
CMYK	cmyk(84.4%, 58.7%, 0%, 29.8%)
CIE-LAB	lab(34.80, 25.16, -59.92)
CIE-LCH	lch(34.80, 64.99, 292.78°)
OKLab	oklab(44.7% -0.0206 -0.1733)
OKLCH	oklch(44.7% 0.174 263.2)
XYZ	xyz(11.0614, 8.3977, 43.6770)
Luminance	0.0840 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4AB3 #B3851C

analogous

#1C95B3 #1C4AB3 #391CB3

triadic

#1C4AB3 #B31C4A #4AB31C

tetradic

#1C4AB3 #B31C95 #B3851C #1CB339

square

#1C4AB3 #B31C95 #B3851C #1CB339

split-complementary

#1C4AB3 #B3391C #95B31C

monochromatic

#0B1E49 #14347E #1C4AB3 #2E64DE #638BE7

Accessibility & contrast

On white

7.84

#1C4AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1C4AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4AB3

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4AB3	#FFFFFF	#000000	##FFFFFF
##1C4AB3	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B7

Deuteranopia (green-blind)

#004BB1

Tritanopia (blue-blind)

#006577

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1c4ab3;
/* rgb */ color: rgb(28, 74, 179);
/* oklch */ color: oklch(44.7% 0.174 263.2);

Tailwind

colors: {
  custom: {
    50: '#747bcb',
    500: '#1c4ab3',
    950: '#000000',
  },
}

SCSS

$custom: #1c4ab3;
$custom-light: #747bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4ab3",
  "rgb": {
    "r": 28,
    "g": 74,
    "b": 179
  },
  "hsl": {
    "h": 221.722,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.447,
    "c": 0.17449,
    "h": 263.2
  },
  "luminance": 0.08399
}

Semantic roles & 50–950 ramp

primary

#1C4AB3

secondary

#CBAA5F

accent

#B838F0

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1C4AB3

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

Preview Lab → · Contrast checker → · Palette generator →