#355EB3#355EB3

#355EB3 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 49.8% C 0.143 H 262.9°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#355EB3
RGB	rgb(53, 94, 179)
HSL	hsl(220, 54%, 45%)
HSV	hsv(220, 70%, 70%)
CMYK	cmyk(70.4%, 47.5%, 0%, 29.8%)
CIE-LAB	lab(41.24, 14.82, -49.44)
CIE-LCH	lch(41.24, 51.62, 286.69°)
OKLab	oklab(49.85% -0.0176 -0.1417)
OKLCH	oklch(49.85% 0.143 262.9)
XYZ	xyz(13.6047, 12.0156, 44.2413)
Luminance	0.1202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355EB3 #B38A35

analogous

#359DB3 #355EB3 #4B35B3

triadic

#355EB3 #B3355E #5EB335

tetradic

#355EB3 #B3359D #B38A35 #35B34B

square

#355EB3 #B3359D #B38A35 #35B34B

split-complementary

#355EB3 #B34B35 #9DB335

monochromatic

#192C55 #274584 #355EB3 #587ECD #87A2DB

Accessibility & contrast

On white

6.17

#355EB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#355EB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355EB3

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355EB3	#FFFFFF	#000000	##FFFFFF
##355EB3	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3167B6

Deuteranopia (green-blind)

#135CB1

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #355eb3;
/* rgb */ color: rgb(53, 94, 179);
/* oklch */ color: oklch(49.8% 0.143 262.9);

Tailwind

colors: {
  custom: {
    50: '#7b8bca',
    500: '#355eb3',
    950: '#000000',
  },
}

SCSS

$custom: #355eb3;
$custom-light: #7b8bca;
$custom-dark: #000000;

JSON

{
  "hex": "#355eb3",
  "rgb": {
    "r": 53,
    "g": 94,
    "b": 179
  },
  "hsl": {
    "h": 220.476,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.49845,
    "c": 0.1428,
    "h": 262.9
  },
  "luminance": 0.12017
}

Semantic roles & 50–950 ramp

primary

#355EB3

secondary

#C5AE7F

accent

#AE4ADE

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #355EB3

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

Preview Lab → · Contrast checker → · Palette generator →