#233E78#233E78

#233E78 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.104 H 263.4°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#233E78
RGB	rgb(35, 62, 120)
HSL	hsl(221, 55%, 30%)
HSV	hsv(221, 71%, 47%)
CMYK	cmyk(70.8%, 48.3%, 0%, 52.9%)
CIE-LAB	lab(27.18, 10.78, -36.23)
CIE-LCH	lch(27.18, 37.80, 286.57°)
OKLab	oklab(37.59% -0.0119 -0.1037)
OKLCH	oklch(37.59% 0.104 263.4)
XYZ	xyz(5.8047, 5.1581, 18.4553)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233E78 #785D23

analogous

#236878 #233E78 #322378

triadic

#233E78 #78233E #3E7823

tetradic

#233E78 #782368 #785D23 #237832

square

#233E78 #782368 #785D23 #237832

split-complementary

#233E78 #783223 #687823

monochromatic

#070D19 #152649 #233E78 #3156A7 #4B73CA

Accessibility & contrast

On white

10.34

#233E78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#233E78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233E78

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233E78	#FFFFFF	#000000	##FFFFFF
##233E78	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20447A

Deuteranopia (green-blind)

#0F3D77

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233e78;
/* rgb */ color: rgb(35, 62, 120);
/* oklch */ color: oklch(37.6% 0.104 263.4);

Tailwind

colors: {
  custom: {
    50: '#69729f',
    500: '#233e78',
    950: '#000000',
  },
}

SCSS

$custom: #233e78;
$custom-light: #69729f;
$custom-dark: #000000;

JSON

{
  "hex": "#233e78",
  "rgb": {
    "r": 35,
    "g": 62,
    "b": 120
  },
  "hsl": {
    "h": 220.941,
    "s": 54.839,
    "l": 30.392
  },
  "oklch": {
    "l": 0.37589,
    "c": 0.10441,
    "h": 263.4
  },
  "luminance": 0.05159
}

Semantic roles & 50–950 ramp

primary

#233E78

secondary

#AB8D4C

accent

#AF4ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #233E78

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

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