#1C4CB3#1C4CB3

#1C4CB3 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.1% C 0.172 H 262.7°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C4CB3
RGB	rgb(28, 76, 179)
HSL	hsl(221, 73%, 41%)
HSV	hsv(221, 84%, 70%)
CMYK	cmyk(84.4%, 57.5%, 0%, 29.8%)
CIE-LAB	lab(35.34, 23.82, -59.04)
CIE-LCH	lch(35.34, 63.66, 291.97°)
OKLab	oklab(45.11% -0.0217 -0.1706)
OKLCH	oklch(45.11% 0.172 262.7)
XYZ	xyz(11.1971, 8.6690, 43.7222)
Luminance	0.0867 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4CB3 #B3831C

analogous

#1C97B3 #1C4CB3 #371CB3

triadic

#1C4CB3 #B31C4C #4CB31C

tetradic

#1C4CB3 #B31C97 #B3831C #1CB337

square

#1C4CB3 #B31C97 #B3831C #1CB337

split-complementary

#1C4CB3 #B3371C #97B31C

monochromatic

#0B1F49 #14367E #1C4CB3 #2E66DE #638DE7

Accessibility & contrast

On white

7.68

#1C4CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#1C4CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4CB3

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4CB3	#FFFFFF	#000000	##FFFFFF
##1C4CB3	1.00	7.68	2.73	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB7

Deuteranopia (green-blind)

#004CB1

Tritanopia (blue-blind)

#006678

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1c4cb3;
/* rgb */ color: rgb(28, 76, 179);
/* oklch */ color: oklch(45.1% 0.172 262.7);

Tailwind

colors: {
  custom: {
    50: '#747dcb',
    500: '#1c4cb3',
    950: '#000000',
  },
}

SCSS

$custom: #1c4cb3;
$custom-light: #747dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4cb3",
  "rgb": {
    "r": 28,
    "g": 76,
    "b": 179
  },
  "hsl": {
    "h": 220.927,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.45107,
    "c": 0.17202,
    "h": 262.7
  },
  "luminance": 0.0867
}

Semantic roles & 50–950 ramp

primary

#1C4CB3

secondary

#CBA95F

accent

#B538F0

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1C4CB3

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

Preview Lab → · Contrast checker → · Palette generator →