#233E9B#233E9B

#233E9B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.4% C 0.155 H 266.8°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#233E9B
RGB	rgb(35, 62, 155)
HSL	hsl(227, 63%, 37%)
HSV	hsv(227, 77%, 61%)
CMYK	cmyk(77.4%, 60%, 0%, 39.2%)
CIE-LAB	lab(29.83, 24.54, -53.61)
CIE-LCH	lch(29.83, 58.96, 294.60°)
OKLab	oklab(40.44% -0.0087 -0.1548)
OKLCH	oklch(40.44% 0.155 266.8)
XYZ	xyz(8.3301, 6.1682, 31.7556)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233E9B #9B8023

analogous

#237A9B #233E9B #44239B

triadic

#233E9B #9B233E #3E9B23

tetradic

#233E9B #9B237A #9B8023 #239B44

square

#233E9B #9B237A #9B8023 #239B44

split-complementary

#233E9B #9B4423 #7A9B23

monochromatic

#0C1637 #182A69 #233E9B #2E52CD #5E7ADB

Accessibility & contrast

On white

9.40

#233E9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#233E9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233E9B

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233E9B	#FFFFFF	#000000	##FFFFFF
##233E9B	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233e9b;
/* rgb */ color: rgb(35, 62, 155);
/* oklch */ color: oklch(40.4% 0.155 266.8);

Tailwind

colors: {
  custom: {
    50: '#7172b9',
    500: '#233e9b',
    950: '#000000',
  },
}

SCSS

$custom: #233e9b;
$custom-light: #7172b9;
$custom-dark: #000000;

JSON

{
  "hex": "#233e9b",
  "rgb": {
    "r": 35,
    "g": 62,
    "b": 155
  },
  "hsl": {
    "h": 226.5,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40435,
    "c": 0.15507,
    "h": 266.8
  },
  "luminance": 0.06169
}

Semantic roles & 50–950 ramp

primary

#233E9B

secondary

#BFA95A

accent

#C142E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233E9B

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

Preview Lab → · Contrast checker → · Palette generator →