#23559B#23559B

#23559B is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.4% C 0.126 H 257.6°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#23559B
RGB	rgb(35, 85, 155)
HSL	hsl(215, 63%, 37%)
HSV	hsv(215, 77%, 61%)
CMYK	cmyk(77.4%, 45.2%, 0%, 39.2%)
CIE-LAB	lab(36.40, 9.02, -42.98)
CIE-LCH	lch(36.40, 43.92, 281.86°)
OKLab	oklab(45.43% -0.0272 -0.1232)
OKLCH	oklch(45.43% 0.126 257.6)
XYZ	xyz(9.8559, 9.2198, 32.2641)
Luminance	0.0922 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23559B #9B6923

analogous

#23919B #23559B #2D239B

triadic

#23559B #9B2355 #559B23

tetradic

#23559B #9B2391 #9B6923 #239B2D

square

#23559B #9B2391 #9B6923 #239B2D

split-complementary

#23559B #9B2D23 #919B23

monochromatic

#0C1E37 #183A69 #23559B #2E70CD #5E92DB

Accessibility & contrast

On white

7.38

#23559B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#23559B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23559B

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23559B	#FFFFFF	#000000	##FFFFFF
##23559B	1.00	7.38	2.84	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315C9E

Deuteranopia (green-blind)

#19519A

Tritanopia (blue-blind)

#006670

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #23559b;
/* rgb */ color: rgb(35, 85, 155);
/* oklch */ color: oklch(45.4% 0.126 257.6);

Tailwind

colors: {
  custom: {
    50: '#7084b9',
    500: '#23559b',
    950: '#000000',
  },
}

SCSS

$custom: #23559b;
$custom-light: #7084b9;
$custom-dark: #000000;

JSON

{
  "hex": "#23559b",
  "rgb": {
    "r": 35,
    "g": 85,
    "b": 155
  },
  "hsl": {
    "h": 215,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.45435,
    "c": 0.12612,
    "h": 257.6
  },
  "luminance": 0.09221
}

Semantic roles & 50–950 ramp

primary

#23559B

secondary

#BF955A

accent

#A242E6

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #23559B

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

Preview Lab → · Contrast checker → · Palette generator →