#233B66#233B66

#233B66 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.6% C 0.081 H 261.2°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#233B66
RGB	rgb(35, 59, 102)
HSL	hsl(219, 49%, 27%)
HSV	hsv(219, 66%, 40%)
CMYK	cmyk(65.7%, 42.2%, 0%, 60%)
CIE-LAB	lab(25.09, 5.82, -28.09)
CIE-LCH	lch(25.09, 28.69, 281.71°)
OKLab	oklab(35.6% -0.0123 -0.0799)
OKLCH	oklch(35.6% 0.081 261.2)
XYZ	xyz(4.6545, 4.4441, 13.1803)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B66 #664E23

analogous

#235D66 #233B66 #2C2366

triadic

#233B66 #66233B #3B6623

tetradic

#233B66 #66235D #664E23 #23662C

square

#233B66 #66235D #664E23 #23662C

split-complementary

#233B66 #662C23 #5D6623

monochromatic

#080D17 #132138 #233B66 #335594 #4470BF

Accessibility & contrast

On white

11.12

#233B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#233B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B66

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B66	#FFFFFF	#000000	##FFFFFF
##233B66	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283F68

Deuteranopia (green-blind)

#1F3965

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #233b66;
/* rgb */ color: rgb(35, 59, 102);
/* oklch */ color: oklch(35.6% 0.081 261.2);

Tailwind

colors: {
  custom: {
    50: '#657092',
    500: '#233b66',
    950: '#000000',
  },
}

SCSS

$custom: #233b66;
$custom-light: #657092;
$custom-dark: #000000;

JSON

{
  "hex": "#233b66",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 102
  },
  "hsl": {
    "h": 218.507,
    "s": 48.905,
    "l": 26.863
  },
  "oklch": {
    "l": 0.35601,
    "c": 0.08082,
    "h": 261.2
  },
  "luminance": 0.04445
}

Semantic roles & 50–950 ramp

primary

#233B66

secondary

#9A7E4B

accent

#A74FD8

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #233B66

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

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