#233D9E#233D9E

#233D9E is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.160 H 267.1°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#233D9E
RGB	rgb(35, 61, 158)
HSL	hsl(227, 64%, 38%)
HSV	hsv(227, 78%, 62%)
CMYK	cmyk(77.8%, 61.4%, 0%, 38%)
CIE-LAB	lab(29.82, 26.38, -55.45)
CIE-LCH	lch(29.82, 61.41, 295.44°)
OKLab	oklab(40.5% -0.008 -0.1603)
OKLCH	oklch(40.5% 0.16 267.1)
XYZ	xyz(8.5313, 6.1625, 33.0810)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D9E #9E8423

analogous

#237A9E #233D9E #46239E

triadic

#233D9E #9E233D #3D9E23

tetradic

#233D9E #9E237A #9E8423 #239E46

square

#233D9E #9E237A #9E8423 #239E46

split-complementary

#233D9E #9E4623 #7A9E23

monochromatic

#0D163A #182A6C #233D9E #2E50D0 #607ADC

Accessibility & contrast

On white

9.41

#233D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#233D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D9E

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D9E	#FFFFFF	#000000	##FFFFFF
##233D9E	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233d9e;
/* rgb */ color: rgb(35, 61, 158);
/* oklch */ color: oklch(40.5% 0.160 267.1);

Tailwind

colors: {
  custom: {
    50: '#7272bb',
    500: '#233d9e',
    950: '#000000',
  },
}

SCSS

$custom: #233d9e;
$custom-light: #7272bb;
$custom-dark: #000000;

JSON

{
  "hex": "#233d9e",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 158
  },
  "hsl": {
    "h": 227.317,
    "s": 63.731,
    "l": 37.843
  },
  "oklch": {
    "l": 0.40503,
    "c": 0.16046,
    "h": 267.1
  },
  "luminance": 0.06163
}

Semantic roles & 50–950 ramp

primary

#233D9E

secondary

#C1AB5C

accent

#C441E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233D9E

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

Preview Lab → · Contrast checker → · Palette generator →