#233A6C#233A6C

#233A6C is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.8% C 0.091 H 263.8°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#233A6C
RGB	rgb(35, 58, 108)
HSL	hsl(221, 51%, 28%)
HSV	hsv(221, 68%, 42%)
CMYK	cmyk(67.6%, 46.3%, 0%, 57.6%)
CIE-LAB	lab(25.15, 8.85, -31.85)
CIE-LCH	lch(25.15, 33.05, 285.53°)
OKLab	oklab(35.78% -0.0099 -0.0909)
OKLCH	oklch(35.78% 0.091 263.8)
XYZ	xyz(4.9120, 4.4657, 14.7876)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A6C #6C5523

analogous

#235E6C #233A6C #30236C

triadic

#233A6C #6C233A #3A6C23

tetradic

#233A6C #6C235E #6C5523 #236C30

square

#233A6C #6C235E #6C5523 #236C30

split-complementary

#233A6C #6C3023 #5E6C23

monochromatic

#070C17 #14213E #233A6C #32539A #466EC3

Accessibility & contrast

On white

11.09

#233A6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#233A6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A6C

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A6C	#FFFFFF	#000000	##FFFFFF
##233A6C	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#223F6E

Deuteranopia (green-blind)

#17396B

Tritanopia (blue-blind)

#00454D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #233a6c;
/* rgb */ color: rgb(35, 58, 108);
/* oklch */ color: oklch(35.8% 0.091 263.8);

Tailwind

colors: {
  custom: {
    50: '#666f96',
    500: '#233a6c',
    950: '#000000',
  },
}

SCSS

$custom: #233a6c;
$custom-light: #666f96;
$custom-dark: #000000;

JSON

{
  "hex": "#233a6c",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 108
  },
  "hsl": {
    "h": 221.096,
    "s": 51.049,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35776,
    "c": 0.09143,
    "h": 263.8
  },
  "luminance": 0.04466
}

Semantic roles & 50–950 ramp

primary

#233A6C

secondary

#9F854B

accent

#AE4DDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #233A6C

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

Preview Lab → · Contrast checker → · Palette generator →