#345CB3#345CB3

#345CB3 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.146 H 263.4°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#345CB3
RGB	rgb(52, 92, 179)
HSL	hsl(221, 55%, 45%)
HSV	hsv(221, 71%, 70%)
CMYK	cmyk(70.9%, 48.6%, 0%, 29.8%)
CIE-LAB	lab(40.63, 15.97, -50.42)
CIE-LCH	lch(40.63, 52.89, 287.57°)
OKLab	oklab(49.37% -0.0166 -0.1446)
OKLCH	oklch(49.37% 0.146 263.4)
XYZ	xyz(13.3771, 11.6376, 44.1804)
Luminance	0.1164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#345CB3 #B38B34

analogous

#349CB3 #345CB3 #4B34B3

triadic

#345CB3 #B3345C #5CB334

tetradic

#345CB3 #B3349C #B38B34 #34B34B

square

#345CB3 #B3349C #B38B34 #34B34B

split-complementary

#345CB3 #B34B34 #9CB334

monochromatic

#182B54 #264484 #345CB3 #567CCE #86A1DC

Accessibility & contrast

On white

6.31

#345CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#345CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #345CB3

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##345CB3	#FFFFFF	#000000	##FFFFFF
##345CB3	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C66B6

Deuteranopia (green-blind)

#065AB1

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #345cb3;
/* rgb */ color: rgb(52, 92, 179);
/* oklch */ color: oklch(49.4% 0.146 263.4);

Tailwind

colors: {
  custom: {
    50: '#7b89ca',
    500: '#345cb3',
    950: '#000000',
  },
}

SCSS

$custom: #345cb3;
$custom-light: #7b89ca;
$custom-dark: #000000;

JSON

{
  "hex": "#345cb3",
  "rgb": {
    "r": 52,
    "g": 92,
    "b": 179
  },
  "hsl": {
    "h": 221.102,
    "s": 54.978,
    "l": 45.294
  },
  "oklch": {
    "l": 0.49369,
    "c": 0.14558,
    "h": 263.4
  },
  "luminance": 0.11639
}

Semantic roles & 50–950 ramp

primary

#345CB3

secondary

#C5AF7D

accent

#AF49DE

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #345CB3

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

Preview Lab → · Contrast checker → · Palette generator →