#233F8F#233F8F

#233F8F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.6% C 0.137 H 265.8°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#233F8F
RGB	rgb(35, 63, 143)
HSL	hsl(224, 61%, 35%)
HSV	hsv(224, 76%, 56%)
CMYK	cmyk(75.5%, 55.9%, 0%, 43.9%)
CIE-LAB	lab(29.15, 19.17, -47.39)
CIE-LCH	lch(29.15, 51.12, 292.02°)
OKLab	oklab(39.62% -0.0101 -0.1365)
OKLCH	oklch(39.62% 0.137 265.8)
XYZ	xyz(7.4268, 5.8947, 26.7277)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F8F #8F7323

analogous

#23758F #233F8F #3D238F

triadic

#233F8F #8F233F #3F8F23

tetradic

#233F8F #8F2375 #8F7323 #238F3D

square

#233F8F #8F2375 #8F7323 #238F3D

split-complementary

#233F8F #8F3D23 #758F23

monochromatic

#0B142D #17295E #233F8F #2F55C0 #5778D6

Accessibility & contrast

On white

9.64

#233F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#233F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F8F

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F8F	#FFFFFF	#000000	##FFFFFF
##233F8F	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A92

Deuteranopia (green-blind)

#00408D

Tritanopia (blue-blind)

#005360

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #233f8f;
/* rgb */ color: rgb(35, 63, 143);
/* oklch */ color: oklch(39.6% 0.137 265.8);

Tailwind

colors: {
  custom: {
    50: '#6e73b0',
    500: '#233f8f',
    950: '#000000',
  },
}

SCSS

$custom: #233f8f;
$custom-light: #6e73b0;
$custom-dark: #000000;

JSON

{
  "hex": "#233f8f",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 143
  },
  "hsl": {
    "h": 224.444,
    "s": 60.674,
    "l": 34.902
  },
  "oklch": {
    "l": 0.39616,
    "c": 0.13691,
    "h": 265.8
  },
  "luminance": 0.05896
}

Semantic roles & 50–950 ramp

primary

#233F8F

secondary

#BA9F54

accent

#BA44E4

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080811

muted

#7B7B80

Preview Lab

Preview with #233F8F

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

Preview Lab → · Contrast checker → · Palette generator →