#233F7A#233F7A

#233F7A is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.106 H 263.2°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#233F7A
RGB	rgb(35, 63, 122)
HSL	hsl(221, 55%, 31%)
HSV	hsv(221, 71%, 48%)
CMYK	cmyk(71.3%, 48.4%, 0%, 52.2%)
CIE-LAB	lab(27.62, 10.88, -36.79)
CIE-LCH	lch(27.62, 38.36, 286.47°)
OKLab	oklab(37.97% -0.0126 -0.1053)
OKLCH	oklch(37.97% 0.106 263.2)
XYZ	xyz(5.9823, 5.3169, 19.1196)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F7A #7A5E23

analogous

#236A7A #233F7A #32237A

triadic

#233F7A #7A233F #3F7A23

tetradic

#233F7A #7A236A #7A5E23 #237A32

square

#233F7A #7A236A #7A5E23 #237A32

split-complementary

#233F7A #7A3223 #6A7A23

monochromatic

#080E1B #15264A #233F7A #3158AA #4C75CC

Accessibility & contrast

On white

10.18

#233F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#233F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F7A

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F7A	#FFFFFF	#000000	##FFFFFF
##233F7A	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21457C

Deuteranopia (green-blind)

#0F3D79

Tritanopia (blue-blind)

#004D56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233f7a;
/* rgb */ color: rgb(35, 63, 122);
/* oklch */ color: oklch(38.0% 0.106 263.2);

Tailwind

colors: {
  custom: {
    50: '#6973a1',
    500: '#233f7a',
    950: '#000000',
  },
}

SCSS

$custom: #233f7a;
$custom-light: #6973a1;
$custom-dark: #000000;

JSON

{
  "hex": "#233f7a",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 122
  },
  "hsl": {
    "h": 220.69,
    "s": 55.414,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37969,
    "c": 0.1061,
    "h": 263.2
  },
  "luminance": 0.05317
}

Semantic roles & 50–950 ramp

primary

#233F7A

secondary

#AD8E4C

accent

#AF49DF

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080F

muted

#7A7B7E

Preview Lab

Preview with #233F7A

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

Preview Lab → · Contrast checker → · Palette generator →