#355CBB#355CBB

#355CBB is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.0% C 0.156 H 264.6°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#355CBB
RGB	rgb(53, 92, 187)
HSL	hsl(223, 56%, 47%)
HSV	hsv(223, 72%, 73%)
CMYK	cmyk(71.7%, 50.8%, 0%, 26.7%)
CIE-LAB	lab(41.21, 19.09, -54.17)
CIE-LCH	lch(41.21, 57.44, 289.41°)
OKLab	oklab(49.99% -0.0148 -0.1557)
OKLCH	oklch(49.99% 0.156 264.6)
XYZ	xyz(14.2618, 11.9975, 48.5682)
Luminance	0.1200 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355CBB #BB9435

analogous

#359FBB #355CBB #5135BB

triadic

#355CBB #BB355C #5CBB35

tetradic

#355CBB #BB359F #BB9435 #35BB51

square

#355CBB #BB359F #BB9435 #35BB51

split-complementary

#355CBB #BB5135 #9FBB35

monochromatic

#1A2D5C #27458B #355CBB #5C7ED1 #8CA4DE

Accessibility & contrast

On white

6.18

#355CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#355CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355CBB

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355CBB	#FFFFFF	#000000	##FFFFFF
##355CBB	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2268BE

Deuteranopia (green-blind)

#005BB9

Tritanopia (blue-blind)

#007383

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #355cbb;
/* rgb */ color: rgb(53, 92, 187);
/* oklch */ color: oklch(50.0% 0.156 264.6);

Tailwind

colors: {
  custom: {
    50: '#7d89d0',
    500: '#355cbb',
    950: '#000000',
  },
}

SCSS

$custom: #355cbb;
$custom-light: #7d89d0;
$custom-dark: #000000;

JSON

{
  "hex": "#355cbb",
  "rgb": {
    "r": 53,
    "g": 92,
    "b": 187
  },
  "hsl": {
    "h": 222.537,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.49992,
    "c": 0.15636,
    "h": 264.6
  },
  "luminance": 0.11999
}

Semantic roles & 50–950 ramp

primary

#355CBB

secondary

#C9B483

accent

#B349DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #355CBB

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

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