#233C7D#233C7D

#233C7D is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.115 H 265.4°. Best body text is #FFFFFF at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#233C7D
RGB	rgb(35, 60, 125)
HSL	hsl(223, 56%, 31%)
HSV	hsv(223, 72%, 49%)
CMYK	cmyk(72%, 52%, 0%, 51%)
CIE-LAB	lab(26.93, 14.14, -39.78)
CIE-LCH	lch(26.93, 42.22, 289.57°)
OKLab	oklab(37.51% -0.0092 -0.1142)
OKLCH	oklch(37.51% 0.115 265.4)
XYZ	xyz(6.0094, 5.0691, 20.0598)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C7D #7D6423

analogous

#23697D #233C7D #37237D

triadic

#233C7D #7D233C #3C7D23

tetradic

#233C7D #7D2369 #7D6423 #237D37

square

#233C7D #7D2369 #7D6423 #237D37

split-complementary

#233C7D #7D3723 #697D23

monochromatic

#080E1D #16254D #233C7D #3053AD #4D71CD

Accessibility & contrast

On white

10.43

#233C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#233C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C7D

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C7D	#FFFFFF	#000000	##FFFFFF
##233C7D	1.00	10.43	2.01	10.43
#FFFFFF	10.43	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16447F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233c7d;
/* rgb */ color: rgb(35, 60, 125);
/* oklch */ color: oklch(37.5% 0.115 265.4);

Tailwind

colors: {
  custom: {
    50: '#6a71a3',
    500: '#233c7d',
    950: '#000000',
  },
}

SCSS

$custom: #233c7d;
$custom-light: #6a71a3;
$custom-dark: #000000;

JSON

{
  "hex": "#233c7d",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 125
  },
  "hsl": {
    "h": 223.333,
    "s": 56.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37511,
    "c": 0.11458,
    "h": 265.4
  },
  "luminance": 0.0507
}

Semantic roles & 50–950 ramp

primary

#233C7D

secondary

#AF944C

accent

#B648E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #233C7D

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

Preview Lab → · Contrast checker → · Palette generator →