#233C66#233C66

#233C66 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.8% C 0.080 H 260.2°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#233C66
RGB	rgb(35, 60, 102)
HSL	hsl(218, 49%, 27%)
HSV	hsv(218, 66%, 40%)
CMYK	cmyk(65.7%, 41.2%, 0%, 60%)
CIE-LAB	lab(25.41, 5.13, -27.59)
CIE-LCH	lch(25.41, 28.06, 280.54°)
OKLab	oklab(35.85% -0.0135 -0.0784)
OKLCH	oklch(35.85% 0.08 260.2)
XYZ	xyz(4.7064, 4.5479, 13.1976)
Luminance	0.0455 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C66 #664D23

analogous

#235E66 #233C66 #2C2366

triadic

#233C66 #66233C #3C6623

tetradic

#233C66 #66235E #664D23 #23662C

square

#233C66 #66235E #664D23 #23662C

split-complementary

#233C66 #662C23 #5E6623

monochromatic

#080D17 #132138 #233C66 #335794 #4472BF

Accessibility & contrast

On white

11.00

#233C66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#233C66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C66

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C66	#FFFFFF	#000000	##FFFFFF
##233C66	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4068

Deuteranopia (green-blind)

#203965

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #233c66;
/* rgb */ color: rgb(35, 60, 102);
/* oklch */ color: oklch(35.8% 0.080 260.2);

Tailwind

colors: {
  custom: {
    50: '#657192',
    500: '#233c66',
    950: '#000000',
  },
}

SCSS

$custom: #233c66;
$custom-light: #657192;
$custom-dark: #000000;

JSON

{
  "hex": "#233c66",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 102
  },
  "hsl": {
    "h": 217.612,
    "s": 48.905,
    "l": 26.863
  },
  "oklch": {
    "l": 0.35847,
    "c": 0.07954,
    "h": 260.2
  },
  "luminance": 0.04548
}

Semantic roles & 50–950 ramp

primary

#233C66

secondary

#9A7C4B

accent

#A54FD8

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #233C66

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

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