#233A9C#233A9C

#233A9C is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.161 H 267.9°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#233A9C
RGB	rgb(35, 58, 156)
HSL	hsl(229, 63%, 37%)
HSV	hsv(229, 78%, 61%)
CMYK	cmyk(77.6%, 62.8%, 0%, 38.8%)
CIE-LAB	lab(28.86, 27.63, -55.81)
CIE-LCH	lch(28.86, 62.27, 296.33°)
OKLab	oklab(39.74% -0.006 -0.1613)
OKLCH	oklch(39.74% 0.161 267.9)
XYZ	xyz(8.2049, 5.7828, 32.1298)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A9C #9C8523

analogous

#23779C #233A9C #48239C

triadic

#233A9C #9C233A #3A9C23

tetradic

#233A9C #9C2377 #9C8523 #239C48

square

#233A9C #9C2377 #9C8523 #239C48

split-complementary

#233A9C #9C4823 #779C23

monochromatic

#0D1538 #18276A #233A9C #2E4DCE #5E76DB

Accessibility & contrast

On white

9.74

#233A9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#233A9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A9C

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A9C	#FFFFFF	#000000	##FFFFFF
##233A9C	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9F

Deuteranopia (green-blind)

#003E9A

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233a9c;
/* rgb */ color: rgb(35, 58, 156);
/* oklch */ color: oklch(39.7% 0.161 267.9);

Tailwind

colors: {
  custom: {
    50: '#7270ba',
    500: '#233a9c',
    950: '#000000',
  },
}

SCSS

$custom: #233a9c;
$custom-light: #7270ba;
$custom-dark: #000000;

JSON

{
  "hex": "#233a9c",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 156
  },
  "hsl": {
    "h": 228.595,
    "s": 63.351,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39737,
    "c": 0.16145,
    "h": 267.9
  },
  "luminance": 0.05784
}

Semantic roles & 50–950 ramp

primary

#233A9C

secondary

#C0AD5B

accent

#C741E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233A9C

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

Preview Lab → · Contrast checker → · Palette generator →