#233A9F#233A9F

#233A9F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.0% C 0.166 H 267.9°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#233A9F
RGB	rgb(35, 58, 159)
HSL	hsl(229, 64%, 38%)
HSV	hsv(229, 78%, 62%)
CMYK	cmyk(78%, 63.5%, 0%, 37.6%)
CIE-LAB	lab(29.12, 28.77, -57.20)
CIE-LCH	lch(29.12, 64.03, 296.70°)
OKLab	oklab(40.01% -0.006 -0.1654)
OKLCH	oklch(40.01% 0.166 267.9)
XYZ	xyz(8.4620, 5.8857, 33.4842)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A9F #9F8823

analogous

#23789F #233A9F #4A239F

triadic

#233A9F #9F233A #3A9F23

tetradic

#233A9F #9F2378 #9F8823 #239F4A

square

#233A9F #9F2378 #9F8823 #239F4A

split-complementary

#233A9F #9F4A23 #789F23

monochromatic

#0D153B #18286D #233A9F #2E4CD1 #6077DC

Accessibility & contrast

On white

9.64

#233A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#233A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A9F

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A9F	#FFFFFF	#000000	##FFFFFF
##233A9F	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)

#004BA2

Deuteranopia (green-blind)

#003F9D

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #233a9f;
/* rgb */ color: rgb(35, 58, 159);
/* oklch */ color: oklch(40.0% 0.166 267.9);

Tailwind

colors: {
  custom: {
    50: '#7270bc',
    500: '#233a9f',
    950: '#000000',
  },
}

SCSS

$custom: #233a9f;
$custom-light: #7270bc;
$custom-dark: #000000;

JSON

{
  "hex": "#233a9f",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 159
  },
  "hsl": {
    "h": 228.871,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40014,
    "c": 0.16552,
    "h": 267.9
  },
  "luminance": 0.05887
}

Semantic roles & 50–950 ramp

primary

#233A9F

secondary

#C1AE5D

accent

#C841E7

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233A9F

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

Preview Lab → · Contrast checker → · Palette generator →