#233D9F#233D9F

#233D9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.162 H 267.2°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#233D9F
RGB	rgb(35, 61, 159)
HSL	hsl(227, 64%, 38%)
HSV	hsv(227, 78%, 62%)
CMYK	cmyk(78%, 61.6%, 0%, 37.6%)
CIE-LAB	lab(29.90, 26.76, -55.92)
CIE-LCH	lch(29.90, 61.99, 295.57°)
OKLab	oklab(40.59% -0.008 -0.1616)
OKLCH	oklch(40.59% 0.162 267.2)
XYZ	xyz(8.6177, 6.1970, 33.5361)
Luminance	0.0620 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D9F #9F8523

analogous

#237B9F #233D9F #47239F

triadic

#233D9F #9F233D #3D9F23

tetradic

#233D9F #9F237B #9F8523 #239F47

square

#233D9F #9F237B #9F8523 #239F47

split-complementary

#233D9F #9F4723 #7B9F23

monochromatic

#0D173B #182A6D #233D9F #2E50D1 #607ADC

Accessibility & contrast

On white

9.38

#233D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#233D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D9F

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D9F	#FFFFFF	#000000	##FFFFFF
##233D9F	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA2

Deuteranopia (green-blind)

#00419D

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233d9f;
/* rgb */ color: rgb(35, 61, 159);
/* oklch */ color: oklch(40.6% 0.162 267.2);

Tailwind

colors: {
  custom: {
    50: '#7272bc',
    500: '#233d9f',
    950: '#000000',
  },
}

SCSS

$custom: #233d9f;
$custom-light: #7272bc;
$custom-dark: #000000;

JSON

{
  "hex": "#233d9f",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 159
  },
  "hsl": {
    "h": 227.419,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40593,
    "c": 0.16183,
    "h": 267.2
  },
  "luminance": 0.06198
}

Semantic roles & 50–950 ramp

primary

#233D9F

secondary

#C1AC5D

accent

#C441E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233D9F

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

Preview Lab → · Contrast checker → · Palette generator →