#1C53AB#1C53AB

#1C53AB is a mid, vivid blue. Relative luminance 0.094; OKLCH L 45.9% C 0.153 H 259.7°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#1C53AB
RGB	rgb(28, 83, 171)
HSL	hsl(217, 72%, 39%)
HSV	hsv(217, 84%, 67%)
CMYK	cmyk(83.6%, 51.5%, 0%, 32.9%)
CIE-LAB	lab(36.69, 15.95, -52.10)
CIE-LCH	lch(36.69, 54.49, 287.02°)
OKLab	oklab(45.94% -0.0272 -0.1501)
OKLCH	oklch(45.94% 0.153 259.7)
XYZ	xyz(10.9201, 9.3723, 39.7537)
Luminance	0.0937 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C53AB #AB741C

analogous

#1C9BAB #1C53AB #2D1CAB

triadic

#1C53AB #AB1C53 #53AB1C

tetradic

#1C53AB #AB1C9B #AB741C #1CAB2D

square

#1C53AB #AB1C9B #AB741C #1CAB2D

split-complementary

#1C53AB #AB2D1C #9BAB1C

monochromatic

#0B2042 #133976 #1C53AB #286DDC #5D91E4

Accessibility & contrast

On white

7.30

#1C53AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1C53AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C53AB

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C53AB	#FFFFFF	#000000	##FFFFFF
##1C53AB	1.00	7.30	2.87	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#185DAE

Deuteranopia (green-blind)

#0050A9

Tritanopia (blue-blind)

#006877

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1c53ab;
/* rgb */ color: rgb(28, 83, 171);
/* oklch */ color: oklch(45.9% 0.153 259.7);

Tailwind

colors: {
  custom: {
    50: '#7282c5',
    500: '#1c53ab',
    950: '#000000',
  },
}

SCSS

$custom: #1c53ab;
$custom-light: #7282c5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c53ab",
  "rgb": {
    "r": 28,
    "g": 83,
    "b": 171
  },
  "hsl": {
    "h": 216.923,
    "s": 71.859,
    "l": 39.02
  },
  "oklch": {
    "l": 0.45943,
    "c": 0.15255,
    "h": 259.7
  },
  "luminance": 0.09374
}

Semantic roles & 50–950 ramp

primary

#1C53AB

secondary

#C99E5A

accent

#A939EF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1C53AB

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

Preview Lab → · Contrast checker → · Palette generator →