#233B9D#233B9D

#233B9D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.0% C 0.162 H 267.6°. Best body text is #FFFFFF at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#233B9D
RGB	rgb(35, 59, 157)
HSL	hsl(228, 64%, 38%)
HSV	hsv(228, 78%, 62%)
CMYK	cmyk(77.7%, 62.4%, 0%, 38.4%)
CIE-LAB	lab(29.21, 27.34, -55.85)
CIE-LCH	lch(29.21, 62.18, 296.08°)
OKLab	oklab(40.02% -0.0066 -0.1614)
OKLCH	oklch(40.02% 0.162 267.6)
XYZ	xyz(8.3408, 5.9186, 32.5946)
Luminance	0.0592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B9D #9D8523

analogous

#23789D #233B9D #48239D

triadic

#233B9D #9D233B #3B9D23

tetradic

#233B9D #9D2378 #9D8523 #239D48

square

#233B9D #9D2378 #9D8523 #239D48

split-complementary

#233B9D #9D4823 #789D23

monochromatic

#0D1539 #18286B #233B9D #2E4ECF #5F78DB

Accessibility & contrast

On white

9.62

#233B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#233B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B9D

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B9D	#FFFFFF	#000000	##FFFFFF
##233B9D	1.00	9.62	2.18	9.62
#FFFFFF	9.62	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA0

Deuteranopia (green-blind)

#003F9B

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #233b9d;
/* rgb */ color: rgb(35, 59, 157);
/* oklch */ color: oklch(40.0% 0.162 267.6);

Tailwind

colors: {
  custom: {
    50: '#7270bb',
    500: '#233b9d',
    950: '#000000',
  },
}

SCSS

$custom: #233b9d;
$custom-light: #7270bb;
$custom-dark: #000000;

JSON

{
  "hex": "#233b9d",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 157
  },
  "hsl": {
    "h": 228.197,
    "s": 63.542,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40022,
    "c": 0.16158,
    "h": 267.6
  },
  "luminance": 0.0592
}

Semantic roles & 50–950 ramp

primary

#233B9D

secondary

#C0AC5C

accent

#C641E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233B9D

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

Preview Lab → · Contrast checker → · Palette generator →