#23397B#23397B

#23397B is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.7% C 0.116 H 266.7°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#23397B
RGB	rgb(35, 57, 123)
HSL	hsl(225, 56%, 31%)
HSV	hsv(225, 72%, 48%)
CMYK	cmyk(71.5%, 53.7%, 0%, 51.8%)
CIE-LAB	lab(25.90, 15.45, -40.19)
CIE-LCH	lch(25.90, 43.05, 291.03°)
OKLab	oklab(36.68% -0.0066 -0.1154)
OKLCH	oklch(36.68% 0.116 266.7)
XYZ	xyz(5.7302, 4.7131, 19.3428)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23397B #7B6523

analogous

#23657B #23397B #39237B

triadic

#23397B #7B2339 #397B23

tetradic

#23397B #7B2365 #7B6523 #237B39

square

#23397B #7B2365 #7B6523 #237B39

split-complementary

#23397B #7B3923 #657B23

monochromatic

#080D1C #15234B #23397B #314FAB #4C6CCC

Accessibility & contrast

On white

10.81

#23397B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#23397B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23397B

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23397B	#FFFFFF	#000000	##FFFFFF
##23397B	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10427D

Deuteranopia (green-blind)

#003A7A

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #23397b;
/* rgb */ color: rgb(35, 57, 123);
/* oklch */ color: oklch(36.7% 0.116 266.7);

Tailwind

colors: {
  custom: {
    50: '#6a6ea2',
    500: '#23397b',
    950: '#000000',
  },
}

SCSS

$custom: #23397b;
$custom-light: #6a6ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#23397b",
  "rgb": {
    "r": 35,
    "g": 57,
    "b": 123
  },
  "hsl": {
    "h": 225,
    "s": 55.696,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36682,
    "c": 0.11564,
    "h": 266.7
  },
  "luminance": 0.04714
}

Semantic roles & 50–950 ramp

primary

#23397B

secondary

#AE954C

accent

#B949DF

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #23397B

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

Preview Lab → · Contrast checker → · Palette generator →