#1C4EB3#1C4EB3

#1C4EB3 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.5% C 0.170 H 262.2°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#1C4EB3
RGB	rgb(28, 78, 179)
HSL	hsl(220, 73%, 41%)
HSV	hsv(220, 84%, 70%)
CMYK	cmyk(84.4%, 56.4%, 0%, 29.8%)
CIE-LAB	lab(35.89, 22.48, -58.15)
CIE-LCH	lch(35.89, 62.34, 291.14°)
OKLab	oklab(45.52% -0.023 -0.168)
OKLCH	oklch(45.52% 0.17 262.2)
XYZ	xyz(11.3370, 8.9489, 43.7689)
Luminance	0.0895 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4EB3 #B3811C

analogous

#1C9AB3 #1C4EB3 #351CB3

triadic

#1C4EB3 #B31C4E #4EB31C

tetradic

#1C4EB3 #B31C9A #B3811C #1CB335

square

#1C4EB3 #B31C9A #B3811C #1CB335

split-complementary

#1C4EB3 #B3351C #9AB31C

monochromatic

#0B2049 #14377E #1C4EB3 #2E68DE #638EE7

Accessibility & contrast

On white

7.53

#1C4EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#1C4EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4EB3

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4EB3	#FFFFFF	#000000	##FFFFFF
##1C4EB3	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB6

Deuteranopia (green-blind)

#004EB1

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1c4eb3;
/* rgb */ color: rgb(28, 78, 179);
/* oklch */ color: oklch(45.5% 0.170 262.2);

Tailwind

colors: {
  custom: {
    50: '#747ecb',
    500: '#1c4eb3',
    950: '#000000',
  },
}

SCSS

$custom: #1c4eb3;
$custom-light: #747ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4eb3",
  "rgb": {
    "r": 28,
    "g": 78,
    "b": 179
  },
  "hsl": {
    "h": 220.132,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.4552,
    "c": 0.16955,
    "h": 262.2
  },
  "luminance": 0.0895
}

Semantic roles & 50–950 ramp

primary

#1C4EB3

secondary

#CBA85F

accent

#B338F0

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1C4EB3

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

Preview Lab → · Contrast checker → · Palette generator →