#233FAF#233FAF

#233FAF is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.181 H 267.0°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#233FAF
RGB	rgb(35, 63, 175)
HSL	hsl(228, 67%, 41%)
HSV	hsv(228, 80%, 69%)
CMYK	cmyk(80%, 64%, 0%, 31.4%)
CIE-LAB	lab(31.82, 31.52, -62.40)
CIE-LCH	lch(31.82, 69.91, 296.80°)
OKLab	oklab(42.45% -0.0094 -0.1806)
OKLCH	oklch(42.45% 0.181 267)
XYZ	xyz(10.2058, 7.0063, 41.3636)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233FAF #AF9323

analogous

#2385AF #233FAF #4D23AF

triadic

#233FAF #AF233F #3FAF23

tetradic

#233FAF #AF2385 #AF9323 #23AF4D

square

#233FAF #AF2385 #AF9323 #23AF4D

split-complementary

#233FAF #AF4D23 #85AF23

monochromatic

#0F1A49 #192D7C #233FAF #3858D7 #6B83E1

Accessibility & contrast

On white

8.74

#233FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#233FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233FAF

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233FAF	#FFFFFF	#000000	##FFFFFF
##233FAF	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B3

Deuteranopia (green-blind)

#0044AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #233faf;
/* rgb */ color: rgb(35, 63, 175);
/* oklch */ color: oklch(42.4% 0.181 267.0);

Tailwind

colors: {
  custom: {
    50: '#7673c8',
    500: '#233faf',
    950: '#000000',
  },
}

SCSS

$custom: #233faf;
$custom-light: #7673c8;
$custom-dark: #000000;

JSON

{
  "hex": "#233faf",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 175
  },
  "hsl": {
    "h": 228,
    "s": 66.667,
    "l": 41.176
  },
  "oklch": {
    "l": 0.42445,
    "c": 0.18082,
    "h": 267
  },
  "luminance": 0.07007
}

Semantic roles & 50–950 ramp

primary

#233FAF

secondary

#C7B466

accent

#C73EEA

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #233FAF

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

Preview Lab → · Contrast checker → · Palette generator →