#233A6D#233A6D

#233A6D is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.8% C 0.093 H 264.0°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#233A6D
RGB	rgb(35, 58, 109)
HSL	hsl(221, 51%, 28%)
HSV	hsv(221, 68%, 43%)
CMYK	cmyk(67.9%, 46.8%, 0%, 57.3%)
CIE-LAB	lab(25.22, 9.24, -32.38)
CIE-LCH	lch(25.22, 33.68, 285.93°)
OKLab	oklab(35.85% -0.0097 -0.0925)
OKLCH	oklch(35.85% 0.093 264)
XYZ	xyz(4.9655, 4.4871, 15.0694)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A6D #6D5623

analogous

#235F6D #233A6D #31236D

triadic

#233A6D #6D233A #3A6D23

tetradic

#233A6D #6D235F #6D5623 #236D31

square

#233A6D #6D235F #6D5623 #236D31

split-complementary

#233A6D #6D3123 #5F6D23

monochromatic

#070C17 #14213F #233A6D #32539B #476EC4

Accessibility & contrast

On white

11.07

#233A6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#233A6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A6D

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A6D	#FFFFFF	#000000	##FFFFFF
##233A6D	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#223F6F

Deuteranopia (green-blind)

#15396C

Tritanopia (blue-blind)

#00464E

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #233a6d;
/* rgb */ color: rgb(35, 58, 109);
/* oklch */ color: oklch(35.8% 0.093 264.0);

Tailwind

colors: {
  custom: {
    50: '#666f97',
    500: '#233a6d',
    950: '#000000',
  },
}

SCSS

$custom: #233a6d;
$custom-light: #666f97;
$custom-dark: #000000;

JSON

{
  "hex": "#233a6d",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 109
  },
  "hsl": {
    "h": 221.351,
    "s": 51.389,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35847,
    "c": 0.09298,
    "h": 264
  },
  "luminance": 0.04488
}

Semantic roles & 50–950 ramp

primary

#233A6D

secondary

#A0864B

accent

#AF4DDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #233A6D

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

Preview Lab → · Contrast checker → · Palette generator →