#233B7A#233B7A

#233B7A is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.111 H 265.6°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#233B7A
RGB	rgb(35, 59, 122)
HSL	hsl(223, 55%, 31%)
HSV	hsv(223, 71%, 48%)
CMYK	cmyk(71.3%, 51.6%, 0%, 52.2%)
CIE-LAB	lab(26.42, 13.66, -38.72)
CIE-LCH	lch(26.42, 41.06, 289.43°)
OKLab	oklab(37.05% -0.0086 -0.1111)
OKLCH	oklch(37.05% 0.111 265.6)
XYZ	xyz(5.7687, 4.8898, 19.0484)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B7A #7A6223

analogous

#23667A #233B7A #36237A

triadic

#233B7A #7A233B #3B7A23

tetradic

#233B7A #7A2366 #7A6223 #237A36

square

#233B7A #7A2366 #7A6223 #237A36

split-complementary

#233B7A #7A3623 #667A23

monochromatic

#080D1B #15244A #233B7A #3152AA #4C6FCC

Accessibility & contrast

On white

10.62

#233B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#233B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B7A

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B7A	#FFFFFF	#000000	##FFFFFF
##233B7A	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17437C

Deuteranopia (green-blind)

#003B79

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233b7a;
/* rgb */ color: rgb(35, 59, 122);
/* oklch */ color: oklch(37.1% 0.111 265.6);

Tailwind

colors: {
  custom: {
    50: '#6970a1',
    500: '#233b7a',
    950: '#000000',
  },
}

SCSS

$custom: #233b7a;
$custom-light: #6970a1;
$custom-dark: #000000;

JSON

{
  "hex": "#233b7a",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 122
  },
  "hsl": {
    "h": 223.448,
    "s": 55.414,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37052,
    "c": 0.11143,
    "h": 265.6
  },
  "luminance": 0.0489
}

Semantic roles & 50–950 ramp

primary

#233B7A

secondary

#AD924C

accent

#B549DF

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #233B7A

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

Preview Lab → · Contrast checker → · Palette generator →