#355AB3#355AB3

#355AB3 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.0% C 0.148 H 264.6°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#355AB3
RGB	rgb(53, 90, 179)
HSL	hsl(222, 54%, 45%)
HSV	hsv(222, 70%, 70%)
CMYK	cmyk(70.4%, 49.7%, 0%, 29.8%)
CIE-LAB	lab(40.12, 17.42, -51.25)
CIE-LCH	lch(40.12, 54.13, 288.77°)
OKLab	oklab(48.99% -0.014 -0.1471)
OKLCH	oklch(48.99% 0.148 264.6)
XYZ	xyz(13.2582, 11.3225, 44.1258)
Luminance	0.1132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355AB3 #B38E35

analogous

#3599B3 #355AB3 #4F35B3

triadic

#355AB3 #B3355A #5AB335

tetradic

#355AB3 #B33599 #B38E35 #35B34F

square

#355AB3 #B33599 #B38E35 #35B34F

split-complementary

#355AB3 #B34F35 #99B335

monochromatic

#192B55 #274284 #355AB3 #587ACD #87A0DB

Accessibility & contrast

On white

6.43

#355AB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#355AB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355AB3

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355AB3	#FFFFFF	#000000	##FFFFFF
##355AB3	1.00	6.43	3.26	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2765B6

Deuteranopia (green-blind)

#0059B1

Tritanopia (blue-blind)

#006F7E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #355ab3;
/* rgb */ color: rgb(53, 90, 179);
/* oklch */ color: oklch(49.0% 0.148 264.6);

Tailwind

colors: {
  custom: {
    50: '#7c88ca',
    500: '#355ab3',
    950: '#000000',
  },
}

SCSS

$custom: #355ab3;
$custom-light: #7c88ca;
$custom-dark: #000000;

JSON

{
  "hex": "#355ab3",
  "rgb": {
    "r": 53,
    "g": 90,
    "b": 179
  },
  "hsl": {
    "h": 222.381,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.48987,
    "c": 0.14775,
    "h": 264.6
  },
  "luminance": 0.11324
}

Semantic roles & 50–950 ramp

primary

#355AB3

secondary

#C5B17F

accent

#B24ADE

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #355AB3

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

Preview Lab → · Contrast checker → · Palette generator →