#233F8C#233F8C

#233F8C is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.4% C 0.133 H 265.5°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#233F8C
RGB	rgb(35, 63, 140)
HSL	hsl(224, 60%, 34%)
HSV	hsv(224, 75%, 55%)
CMYK	cmyk(75%, 55%, 0%, 45.1%)
CIE-LAB	lab(28.92, 17.99, -45.91)
CIE-LCH	lch(28.92, 49.31, 291.39°)
OKLab	oklab(39.37% -0.0103 -0.1322)
OKLCH	oklch(39.37% 0.133 265.5)
XYZ	xyz(7.2026, 5.8050, 25.5467)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F8C #8C7023

analogous

#23748C #233F8C #3C238C

triadic

#233F8C #8C233F #3F8C23

tetradic

#233F8C #8C2374 #8C7023 #238C3C

square

#233F8C #8C2374 #8C7023 #238C3C

split-complementary

#233F8C #8C3C23 #748C23

monochromatic

#0B132A #17295B #233F8C #2F55BD #5577D4

Accessibility & contrast

On white

9.72

#233F8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#233F8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F8C

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F8C	#FFFFFF	#000000	##FFFFFF
##233F8C	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04498F

Deuteranopia (green-blind)

#00408A

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233f8c;
/* rgb */ color: rgb(35, 63, 140);
/* oklch */ color: oklch(39.4% 0.133 265.5);

Tailwind

colors: {
  custom: {
    50: '#6d73ae',
    500: '#233f8c',
    950: '#000000',
  },
}

SCSS

$custom: #233f8c;
$custom-light: #6d73ae;
$custom-dark: #000000;

JSON

{
  "hex": "#233f8c",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 140
  },
  "hsl": {
    "h": 224,
    "s": 60,
    "l": 34.314
  },
  "oklch": {
    "l": 0.3937,
    "c": 0.1326,
    "h": 265.5
  },
  "luminance": 0.05806
}

Semantic roles & 50–950 ramp

primary

#233F8C

secondary

#B89D52

accent

#B945E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #233F8C

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

Preview Lab → · Contrast checker → · Palette generator →