#233FB2#233FB2

#233FB2 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.185 H 267.1°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#233FB2
RGB	rgb(35, 63, 178)
HSL	hsl(228, 67%, 42%)
HSV	hsv(228, 80%, 70%)
CMYK	cmyk(80.3%, 64.6%, 0%, 30.2%)
CIE-LAB	lab(32.09, 32.65, -63.74)
CIE-LCH	lch(32.09, 71.62, 297.12°)
OKLab	oklab(42.73% -0.0094 -0.1845)
OKLCH	oklch(42.73% 0.185 267.1)
XYZ	xyz(10.5037, 7.1255, 42.9326)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233FB2 #B29623

analogous

#2387B2 #233FB2 #4F23B2

triadic

#233FB2 #B2233F #3FB223

tetradic

#233FB2 #B22387 #B29623 #23B24F

square

#233FB2 #B22387 #B29623 #23B24F

split-complementary

#233FB2 #B24F23 #87B223

monochromatic

#0F1B4C #192D7F #233FB2 #3A59D8 #6D84E2

Accessibility & contrast

On white

8.66

#233FB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#233FB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233FB2

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233FB2	#FFFFFF	#000000	##FFFFFF
##233FB2	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0045B0

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #233fb2;
/* rgb */ color: rgb(35, 63, 178);
/* oklch */ color: oklch(42.7% 0.185 267.1);

Tailwind

colors: {
  custom: {
    50: '#7774ca',
    500: '#233fb2',
    950: '#000000',
  },
}

SCSS

$custom: #233fb2;
$custom-light: #7774ca;
$custom-dark: #000000;

JSON

{
  "hex": "#233fb2",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 178
  },
  "hsl": {
    "h": 228.252,
    "s": 67.136,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42727,
    "c": 0.18476,
    "h": 267.1
  },
  "luminance": 0.07127
}

Semantic roles & 50–950 ramp

primary

#233FB2

secondary

#C9B668

accent

#C83EEA

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #233FB2

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

Preview Lab → · Contrast checker → · Palette generator →