#233FA1#233FA1

#233FA1 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.2% C 0.162 H 266.7°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#233FA1
RGB	rgb(35, 63, 161)
HSL	hsl(227, 64%, 38%)
HSV	hsv(227, 78%, 63%)
CMYK	cmyk(78.3%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(30.60, 26.18, -55.99)
CIE-LCH	lch(30.60, 61.81, 295.06°)
OKLab	oklab(41.17% -0.0093 -0.1618)
OKLCH	oklch(41.17% 0.162 266.7)
XYZ	xyz(8.9014, 6.4845, 34.4938)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233FA1 #A18523

analogous

#237EA1 #233FA1 #4623A1

triadic

#233FA1 #A1233F #3FA123

tetradic

#233FA1 #A1237E #A18523 #23A146

square

#233FA1 #A1237E #A18523 #23A146

split-complementary

#233FA1 #A14623 #7EA123

monochromatic

#0D183C #182B6F #233FA1 #2F53D2 #627DDD

Accessibility & contrast

On white

9.14

#233FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#233FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233FA1

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233FA1	#FFFFFF	#000000	##FFFFFF
##233FA1	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #233fa1;
/* rgb */ color: rgb(35, 63, 161);
/* oklch */ color: oklch(41.2% 0.162 266.7);

Tailwind

colors: {
  custom: {
    50: '#7373be',
    500: '#233fa1',
    950: '#000000',
  },
}

SCSS

$custom: #233fa1;
$custom-light: #7373be;
$custom-dark: #000000;

JSON

{
  "hex": "#233fa1",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 226.667,
    "s": 64.286,
    "l": 38.431
  },
  "oklch": {
    "l": 0.41166,
    "c": 0.16207,
    "h": 266.7
  },
  "luminance": 0.06486
}

Semantic roles & 50–950 ramp

primary

#233FA1

secondary

#C2AC5E

accent

#C241E7

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233FA1

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

Preview Lab → · Contrast checker → · Palette generator →