#375DD3#375DD3

#375DD3 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.1% C 0.187 H 266.3°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#375DD3
RGB	rgb(55, 93, 211)
HSL	hsl(225, 64%, 52%)
HSV	hsv(225, 74%, 83%)
CMYK	cmyk(73.9%, 55.9%, 0%, 17.3%)
CIE-LAB	lab(43.27, 27.56, -64.71)
CIE-LCH	lch(43.27, 70.33, 293.07°)
OKLab	oklab(52.12% -0.0119 -0.1866)
OKLCH	oklch(52.12% 0.187 266.3)
XYZ	xyz(17.2437, 13.3422, 63.2819)
Luminance	0.1334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375DD3 #D3AD37

analogous

#37ABD3 #375DD3 #5F37D3

triadic

#375DD3 #D3375D #5DD337

tetradic

#375DD3 #D337AB #D3AD37 #37D35F

square

#375DD3 #D337AB #D3AD37 #37D35F

split-complementary

#375DD3 #D35F37 #ABD337

monochromatic

#1A3076 #2545A8 #375DD3 #6986DE #9BAEE9

Accessibility & contrast

On white

5.72

#375DD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#375DD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375DD3

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375DD3	#FFFFFF	#000000	##FFFFFF
##375DD3	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED7

Deuteranopia (green-blind)

#005FD1

Tritanopia (blue-blind)

#007A8F

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #375dd3;
/* rgb */ color: rgb(55, 93, 211);
/* oklch */ color: oklch(52.1% 0.187 266.3);

Tailwind

colors: {
  custom: {
    50: '#838ae1',
    500: '#375dd3',
    950: '#000000',
  },
}

SCSS

$custom: #375dd3;
$custom-light: #838ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#375dd3",
  "rgb": {
    "r": 55,
    "g": 93,
    "b": 211
  },
  "hsl": {
    "h": 225.385,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.52117,
    "c": 0.18698,
    "h": 266.3
  },
  "luminance": 0.13344
}

Semantic roles & 50–950 ramp

primary

#375DD3

secondary

#D5C491

accent

#BE41E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #375DD3

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

Preview Lab → · Contrast checker → · Palette generator →