#233F80#233F80

#233F80 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.4% C 0.115 H 264.2°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#233F80
RGB	rgb(35, 63, 128)
HSL	hsl(222, 57%, 32%)
HSV	hsv(222, 73%, 50%)
CMYK	cmyk(72.7%, 50.8%, 0%, 49.8%)
CIE-LAB	lab(28.03, 13.25, -39.89)
CIE-LCH	lch(28.03, 42.03, 288.37°)
OKLab	oklab(38.42% -0.0117 -0.1145)
OKLCH	oklch(38.42% 0.115 264.2)
XYZ	xyz(6.3656, 5.4702, 21.1383)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F80 #806423

analogous

#236E80 #233F80 #352380

triadic

#233F80 #80233F #3F8023

tetradic

#233F80 #80236E #806423 #238035

square

#233F80 #80236E #806423 #238035

split-complementary

#233F80 #803523 #6E8023

monochromatic

#091020 #162750 #233F80 #3057B0 #4F75CF

Accessibility & contrast

On white

10.03

#233F80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#233F80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F80

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F80	#FFFFFF	#000000	##FFFFFF
##233F80	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4782

Deuteranopia (green-blind)

#003E7F

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233f80;
/* rgb */ color: rgb(35, 63, 128);
/* oklch */ color: oklch(38.4% 0.115 264.2);

Tailwind

colors: {
  custom: {
    50: '#6a73a5',
    500: '#233f80',
    950: '#000000',
  },
}

SCSS

$custom: #233f80;
$custom-light: #6a73a5;
$custom-dark: #000000;

JSON

{
  "hex": "#233f80",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 128
  },
  "hsl": {
    "h": 221.935,
    "s": 57.055,
    "l": 31.961
  },
  "oklch": {
    "l": 0.3842,
    "c": 0.11505,
    "h": 264.2
  },
  "luminance": 0.05471
}

Semantic roles & 50–950 ramp

primary

#233F80

secondary

#B2944D

accent

#B247E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #233F80

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

Preview Lab → · Contrast checker → · Palette generator →