#365CBB#365CBB

#365CBB is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.0% C 0.156 H 264.9°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#365CBB
RGB	rgb(54, 92, 187)
HSL	hsl(223, 55%, 47%)
HSV	hsv(223, 71%, 73%)
CMYK	cmyk(71.1%, 50.8%, 0%, 26.7%)
CIE-LAB	lab(41.26, 19.23, -54.10)
CIE-LCH	lch(41.26, 57.42, 289.57°)
OKLab	oklab(50.04% -0.0139 -0.1554)
OKLCH	oklch(50.04% 0.156 264.9)
XYZ	xyz(14.3150, 12.0249, 48.5707)
Luminance	0.1203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#365CBB #BB9536

analogous

#369FBB #365CBB #5236BB

triadic

#365CBB #BB365C #5CBB36

tetradic

#365CBB #BB369F #BB9536 #36BB52

square

#365CBB #BB369F #BB9536 #36BB52

split-complementary

#365CBB #BB5236 #9FBB36

monochromatic

#1B2D5C #28458C #365CBB #5E7FD0 #8DA4DE

Accessibility & contrast

On white

6.17

#365CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#365CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #365CBB

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##365CBB	#FFFFFF	#000000	##FFFFFF
##365CBB	1.00	6.17	3.41	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2368BE

Deuteranopia (green-blind)

#005CB9

Tritanopia (blue-blind)

#007383

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #365cbb;
/* rgb */ color: rgb(54, 92, 187);
/* oklch */ color: oklch(50.0% 0.156 264.9);

Tailwind

colors: {
  custom: {
    50: '#7e89d0',
    500: '#365cbb',
    950: '#000000',
  },
}

SCSS

$custom: #365cbb;
$custom-light: #7e89d0;
$custom-dark: #000000;

JSON

{
  "hex": "#365cbb",
  "rgb": {
    "r": 54,
    "g": 92,
    "b": 187
  },
  "hsl": {
    "h": 222.857,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.50037,
    "c": 0.15604,
    "h": 264.9
  },
  "luminance": 0.12026
}

Semantic roles & 50–950 ramp

primary

#365CBB

secondary

#C9B584

accent

#B449DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #365CBB

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

Preview Lab → · Contrast checker → · Palette generator →