#233C78#233C78

#233C78 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.107 H 264.7°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#233C78
RGB	rgb(35, 60, 120)
HSL	hsl(222, 55%, 30%)
HSV	hsv(222, 71%, 47%)
CMYK	cmyk(70.8%, 50%, 0%, 52.9%)
CIE-LAB	lab(26.58, 12.17, -37.21)
CIE-LCH	lch(26.58, 39.15, 288.11°)
OKLab	oklab(37.13% -0.0099 -0.1066)
OKLCH	oklch(37.13% 0.107 264.7)
XYZ	xyz(5.6980, 4.9445, 18.4198)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C78 #785F23

analogous

#236678 #233C78 #342378

triadic

#233C78 #78233C #3C7823

tetradic

#233C78 #782366 #785F23 #237834

square

#233C78 #782366 #785F23 #237834

split-complementary

#233C78 #783423 #667823

monochromatic

#070D19 #152449 #233C78 #3154A7 #4B70CA

Accessibility & contrast

On white

10.56

#233C78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#233C78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C78

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C78	#FFFFFF	#000000	##FFFFFF
##233C78	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C437A

Deuteranopia (green-blind)

#073B77

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233c78;
/* rgb */ color: rgb(35, 60, 120);
/* oklch */ color: oklch(37.1% 0.107 264.7);

Tailwind

colors: {
  custom: {
    50: '#69719f',
    500: '#233c78',
    950: '#000000',
  },
}

SCSS

$custom: #233c78;
$custom-light: #69719f;
$custom-dark: #000000;

JSON

{
  "hex": "#233c78",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 120
  },
  "hsl": {
    "h": 222.353,
    "s": 54.839,
    "l": 30.392
  },
  "oklch": {
    "l": 0.37127,
    "c": 0.10708,
    "h": 264.7
  },
  "luminance": 0.04945
}

Semantic roles & 50–950 ramp

primary

#233C78

secondary

#AB8F4C

accent

#B24ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233C78

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

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