#3658CF#3658CF

#3658CF is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.8% C 0.188 H 267.2°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#3658CF
RGB	rgb(54, 88, 207)
HSL	hsl(227, 61%, 51%)
HSV	hsv(227, 74%, 81%)
CMYK	cmyk(73.9%, 57.5%, 0%, 18.8%)
CIE-LAB	lab(41.64, 29.18, -65.07)
CIE-LCH	lch(41.64, 71.32, 294.15°)
OKLab	oklab(50.78% -0.0093 -0.1878)
OKLCH	oklch(50.78% 0.188 267.2)
XYZ	xyz(16.2696, 12.2670, 60.5297)
Luminance	0.1227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3658CF #CFAD36

analogous

#36A4CF #3658CF #6036CF

triadic

#3658CF #CF3658 #58CF36

tetradic

#3658CF #CF36A4 #CFAD36 #36CF60

square

#3658CF #CF36A4 #CFAD36 #36CF60

split-complementary

#3658CF #CF6036 #A4CF36

monochromatic

#1B2E70 #2742A1 #3658CF #6781DB #99AAE7

Accessibility & contrast

On white

6.08

#3658CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#3658CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3658CF

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3658CF	#FFFFFF	#000000	##FFFFFF
##3658CF	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD3

Deuteranopia (green-blind)

#005BCD

Tritanopia (blue-blind)

#00768B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3658cf;
/* rgb */ color: rgb(54, 88, 207);
/* oklch */ color: oklch(50.8% 0.188 267.2);

Tailwind

colors: {
  custom: {
    50: '#8286df',
    500: '#3658cf',
    950: '#000000',
  },
}

SCSS

$custom: #3658cf;
$custom-light: #8286df;
$custom-dark: #000000;

JSON

{
  "hex": "#3658cf",
  "rgb": {
    "r": 54,
    "g": 88,
    "b": 207
  },
  "hsl": {
    "h": 226.667,
    "s": 61.446,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50782,
    "c": 0.188,
    "h": 267.2
  },
  "luminance": 0.12269
}

Semantic roles & 50–950 ramp

primary

#3658CF

secondary

#D2C38F

accent

#C143E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3658CF

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

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