#23378B#23378B

#23378B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.142 H 268.4°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#23378B
RGB	rgb(35, 55, 139)
HSL	hsl(228, 60%, 34%)
HSV	hsv(228, 75%, 55%)
CMYK	cmyk(74.8%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(26.60, 23.11, -49.06)
CIE-LCH	lch(26.60, 54.23, 295.22°)
OKLab	oklab(37.61% -0.0039 -0.1416)
OKLCH	oklch(37.61% 0.142 268.4)
XYZ	xyz(6.7179, 4.9531, 25.0231)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23378B #8B7723

analogous

#236B8B #23378B #43238B

triadic

#23378B #8B2337 #378B23

tetradic

#23378B #8B236B #8B7723 #238B43

square

#23378B #8B236B #8B7723 #238B43

split-complementary

#23378B #8B4323 #6B8B23

monochromatic

#0A1029 #17245A #23378B #2F4ABC #546DD4

Accessibility & contrast

On white

10.55

#23378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#23378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23378B

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23378B	#FFFFFF	#000000	##FFFFFF
##23378B	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #23378b;
/* rgb */ color: rgb(35, 55, 139);
/* oklch */ color: oklch(37.6% 0.142 268.4);

Tailwind

colors: {
  custom: {
    50: '#6e6dae',
    500: '#23378b',
    950: '#000000',
  },
}

SCSS

$custom: #23378b;
$custom-light: #6e6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#23378b",
  "rgb": {
    "r": 35,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 228.462,
    "s": 59.77,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37607,
    "c": 0.14161,
    "h": 268.4
  },
  "luminance": 0.04954
}

Semantic roles & 50–950 ramp

primary

#23378B

secondary

#B8A452

accent

#C545E3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #23378B

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

Preview Lab → · Contrast checker → · Palette generator →