#233A6B#233A6B

#233A6B is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.7% C 0.090 H 263.6°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#233A6B
RGB	rgb(35, 58, 107)
HSL	hsl(221, 51%, 28%)
HSV	hsv(221, 67%, 42%)
CMYK	cmyk(67.3%, 45.8%, 0%, 58%)
CIE-LAB	lab(25.09, 8.46, -31.31)
CIE-LCH	lch(25.09, 32.43, 285.12°)
OKLab	oklab(35.7% -0.0101 -0.0893)
OKLCH	oklch(35.7% 0.09 263.6)
XYZ	xyz(4.8591, 4.4445, 14.5089)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A6B #6B5423

analogous

#235E6B #233A6B #30236B

triadic

#233A6B #6B233A #3A6B23

tetradic

#233A6B #6B235E #6B5423 #236B30

square

#233A6B #6B235E #6B5423 #236B30

split-complementary

#233A6B #6B3023 #5E6B23

monochromatic

#080C17 #14213D #233A6B #325399 #466EC2

Accessibility & contrast

On white

11.12

#233A6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#233A6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A6B

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A6B	#FFFFFF	#000000	##FFFFFF
##233A6B	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)

#233F6D

Deuteranopia (green-blind)

#18386A

Tritanopia (blue-blind)

#00454D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #233a6b;
/* rgb */ color: rgb(35, 58, 107);
/* oklch */ color: oklch(35.7% 0.090 263.6);

Tailwind

colors: {
  custom: {
    50: '#666f96',
    500: '#233a6b',
    950: '#000000',
  },
}

SCSS

$custom: #233a6b;
$custom-light: #666f96;
$custom-dark: #000000;

JSON

{
  "hex": "#233a6b",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 107
  },
  "hsl": {
    "h": 220.833,
    "s": 50.704,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35704,
    "c": 0.08989,
    "h": 263.6
  },
  "luminance": 0.04445
}

Semantic roles & 50–950 ramp

primary

#233A6B

secondary

#9E844B

accent

#AD4EDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #233A6B

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

Preview Lab → · Contrast checker → · Palette generator →