#1C55B3#1C55B3

#1C55B3 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.0% C 0.161 H 260.1°. Best body text is #FFFFFF at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#1C55B3
RGB	rgb(28, 85, 179)
HSL	hsl(217, 73%, 41%)
HSV	hsv(217, 84%, 70%)
CMYK	cmyk(84.4%, 52.5%, 0%, 29.8%)
CIE-LAB	lab(37.84, 17.80, -54.98)
CIE-LCH	lch(37.84, 57.79, 287.94°)
OKLab	oklab(47% -0.0276 -0.1585)
OKLCH	oklch(47% 0.161 260.1)
XYZ	xyz(11.8611, 9.9971, 43.9436)
Luminance	0.1000 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C55B3 #B37A1C

analogous

#1CA0B3 #1C55B3 #2E1CB3

triadic

#1C55B3 #B31C55 #55B31C

tetradic

#1C55B3 #B31CA0 #B37A1C #1CB32E

square

#1C55B3 #B31CA0 #B37A1C #1CB32E

split-complementary

#1C55B3 #B32E1C #A0B31C

monochromatic

#0B2349 #143C7E #1C55B3 #2E70DE #6395E7

Accessibility & contrast

On white

7.00

#1C55B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#1C55B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C55B3

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C55B3	#FFFFFF	#000000	##FFFFFF
##1C55B3	1.00	7.00	3.00	7.00
#FFFFFF	7.00	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1060B6

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#006C7C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1c55b3;
/* rgb */ color: rgb(28, 85, 179);
/* oklch */ color: oklch(47.0% 0.161 260.1);

Tailwind

colors: {
  custom: {
    50: '#7484ca',
    500: '#1c55b3',
    950: '#000000',
  },
}

SCSS

$custom: #1c55b3;
$custom-light: #7484ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1c55b3",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 179
  },
  "hsl": {
    "h": 217.351,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47001,
    "c": 0.16092,
    "h": 260.1
  },
  "luminance": 0.09999
}

Semantic roles & 50–950 ramp

primary

#1C55B3

secondary

#CBA35F

accent

#AA38F0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1C55B3

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

Preview Lab → · Contrast checker → · Palette generator →