#23539B#23539B

#23539B is a dark, vivid blue. Relative luminance 0.089; OKLCH L 45.0% C 0.129 H 258.6°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#23539B
RGB	rgb(35, 83, 155)
HSL	hsl(216, 63%, 37%)
HSV	hsv(216, 77%, 61%)
CMYK	cmyk(77.4%, 46.5%, 0%, 39.2%)
CIE-LAB	lab(35.81, 10.35, -43.94)
CIE-LCH	lch(35.81, 45.14, 283.25°)
OKLab	oklab(44.98% -0.0254 -0.126)
OKLCH	oklch(44.98% 0.129 258.6)
XYZ	xyz(9.7006, 8.9093, 32.2124)
Luminance	0.0891 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23539B #9B6B23

analogous

#238F9B #23539B #2F239B

triadic

#23539B #9B2353 #539B23

tetradic

#23539B #9B238F #9B6B23 #239B2F

square

#23539B #9B238F #9B6B23 #239B2F

split-complementary

#23539B #9B2F23 #8F9B23

monochromatic

#0C1E37 #183869 #23539B #2E6ECD #5E90DB

Accessibility & contrast

On white

7.55

#23539B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#23539B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23539B

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23539B	#FFFFFF	#000000	##FFFFFF
##23539B	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D5A9E

Deuteranopia (green-blind)

#124F9A

Tritanopia (blue-blind)

#00646F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #23539b;
/* rgb */ color: rgb(35, 83, 155);
/* oklch */ color: oklch(45.0% 0.129 258.6);

Tailwind

colors: {
  custom: {
    50: '#7082b9',
    500: '#23539b',
    950: '#000000',
  },
}

SCSS

$custom: #23539b;
$custom-light: #7082b9;
$custom-dark: #000000;

JSON

{
  "hex": "#23539b",
  "rgb": {
    "r": 35,
    "g": 83,
    "b": 155
  },
  "hsl": {
    "h": 216,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44976,
    "c": 0.12855,
    "h": 258.6
  },
  "luminance": 0.0891
}

Semantic roles & 50–950 ramp

primary

#23539B

secondary

#BF975A

accent

#A442E6

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #23539B

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

Preview Lab → · Contrast checker → · Palette generator →