#233F7C#233F7C

#233F7C is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.1% C 0.109 H 263.5°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#233F7C
RGB	rgb(35, 63, 124)
HSL	hsl(221, 56%, 31%)
HSV	hsv(221, 72%, 49%)
CMYK	cmyk(71.8%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(27.76, 11.66, -37.83)
CIE-LCH	lch(27.76, 39.59, 287.14°)
OKLab	oklab(38.12% -0.0123 -0.1084)
OKLCH	oklch(38.12% 0.109 263.5)
XYZ	xyz(6.1074, 5.3670, 19.7789)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F7C #7C6023

analogous

#236B7C #233F7C #33237C

triadic

#233F7C #7C233F #3F7C23

tetradic

#233F7C #7C236B #7C6023 #237C33

square

#233F7C #7C236B #7C6023 #237C33

split-complementary

#233F7C #7C3323 #6B7C23

monochromatic

#080F1D #16274C #233F7C #3057AC #4D75CD

Accessibility & contrast

On white

10.13

#233F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#233F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F7C

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F7C	#FFFFFF	#000000	##FFFFFF
##233F7C	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F467E

Deuteranopia (green-blind)

#0A3E7B

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233f7c;
/* rgb */ color: rgb(35, 63, 124);
/* oklch */ color: oklch(38.1% 0.109 263.5);

Tailwind

colors: {
  custom: {
    50: '#6a73a2',
    500: '#233f7c',
    950: '#000000',
  },
}

SCSS

$custom: #233f7c;
$custom-light: #6a73a2;
$custom-dark: #000000;

JSON

{
  "hex": "#233f7c",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 221.124,
    "s": 55.975,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38118,
    "c": 0.10909,
    "h": 263.5
  },
  "luminance": 0.05368
}

Semantic roles & 50–950 ramp

primary

#233F7C

secondary

#AF904C

accent

#B049DF

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #233F7C

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

Preview Lab → · Contrast checker → · Palette generator →