#233A7B#233A7B

#233A7B is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.9% C 0.114 H 266.2°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#233A7B
RGB	rgb(35, 58, 123)
HSL	hsl(224, 56%, 31%)
HSV	hsv(224, 72%, 48%)
CMYK	cmyk(71.5%, 52.8%, 0%, 51.8%)
CIE-LAB	lab(26.19, 14.75, -39.71)
CIE-LCH	lch(26.19, 42.36, 290.37°)
OKLab	oklab(36.91% -0.0075 -0.114)
OKLCH	oklch(36.91% 0.114 266.2)
XYZ	xyz(5.7801, 4.8129, 19.3594)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A7B #7B6423

analogous

#23667B #233A7B #38237B

triadic

#233A7B #7B233A #3A7B23

tetradic

#233A7B #7B2366 #7B6423 #237B38

square

#233A7B #7B2366 #7B6423 #237B38

split-complementary

#233A7B #7B3823 #667B23

monochromatic

#080D1C #15244B #233A7B #3150AB #4C6ECC

Accessibility & contrast

On white

10.70

#233A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#233A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A7B

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A7B	#FFFFFF	#000000	##FFFFFF
##233A7B	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13427D

Deuteranopia (green-blind)

#003A7A

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233a7b;
/* rgb */ color: rgb(35, 58, 123);
/* oklch */ color: oklch(36.9% 0.114 266.2);

Tailwind

colors: {
  custom: {
    50: '#6a6fa2',
    500: '#233a7b',
    950: '#000000',
  },
}

SCSS

$custom: #233a7b;
$custom-light: #6a6fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#233a7b",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 123
  },
  "hsl": {
    "h": 224.318,
    "s": 55.696,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36905,
    "c": 0.11428,
    "h": 266.2
  },
  "luminance": 0.04813
}

Semantic roles & 50–950 ramp

primary

#233A7B

secondary

#AE944C

accent

#B849DF

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #233A7B

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

Preview Lab → · Contrast checker → · Palette generator →