#233F9D#233F9D

#233F9D is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.8% C 0.157 H 266.6°. Best body text is #FFFFFF at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#233F9D
RGB	rgb(35, 63, 157)
HSL	hsl(226, 64%, 38%)
HSV	hsv(226, 78%, 62%)
CMYK	cmyk(77.7%, 59.9%, 0%, 38.4%)
CIE-LAB	lab(30.27, 24.64, -54.11)
CIE-LCH	lch(30.27, 59.46, 294.48°)
OKLab	oklab(40.81% -0.0094 -0.1563)
OKLCH	oklch(40.81% 0.157 266.6)
XYZ	xyz(8.5543, 6.3457, 32.6658)
Luminance	0.0635 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F9D #9D8123

analogous

#237C9D #233F9D #44239D

triadic

#233F9D #9D233F #3F9D23

tetradic

#233F9D #9D237C #9D8123 #239D44

square

#233F9D #9D237C #9D8123 #239D44

split-complementary

#233F9D #9D4423 #7C9D23

monochromatic

#0D1739 #182B6B #233F9D #2E53CF #5F7CDB

Accessibility & contrast

On white

9.25

#233F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#233F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F9D

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F9D	#FFFFFF	#000000	##FFFFFF
##233F9D	1.00	9.25	2.27	9.25
#FFFFFF	9.25	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA0

Deuteranopia (green-blind)

#00429B

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #233f9d;
/* rgb */ color: rgb(35, 63, 157);
/* oklch */ color: oklch(40.8% 0.157 266.6);

Tailwind

colors: {
  custom: {
    50: '#7273bb',
    500: '#233f9d',
    950: '#000000',
  },
}

SCSS

$custom: #233f9d;
$custom-light: #7273bb;
$custom-dark: #000000;

JSON

{
  "hex": "#233f9d",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 157
  },
  "hsl": {
    "h": 226.23,
    "s": 63.542,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40812,
    "c": 0.15658,
    "h": 266.6
  },
  "luminance": 0.06347
}

Semantic roles & 50–950 ramp

primary

#233F9D

secondary

#C0A95C

accent

#C141E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233F9D

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

Preview Lab → · Contrast checker → · Palette generator →