#233D7B#233D7B

#233D7B is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.110 H 264.6°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#233D7B
RGB	rgb(35, 61, 123)
HSL	hsl(222, 56%, 31%)
HSV	hsv(222, 72%, 48%)
CMYK	cmyk(71.5%, 50.4%, 0%, 51.8%)
CIE-LAB	lab(27.09, 12.66, -38.28)
CIE-LCH	lch(27.09, 40.32, 288.30°)
OKLab	oklab(37.58% -0.0104 -0.1098)
OKLCH	oklch(37.58% 0.11 264.6)
XYZ	xyz(5.9358, 5.1243, 19.4113)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D7B #7B6123

analogous

#23697B #233D7B #35237B

triadic

#233D7B #7B233D #3D7B23

tetradic

#233D7B #7B2369 #7B6123 #237B35

square

#233D7B #7B2369 #7B6123 #237B35

split-complementary

#233D7B #7B3523 #697B23

monochromatic

#080E1C #15254B #233D7B #3155AB #4C72CC

Accessibility & contrast

On white

10.37

#233D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#233D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D7B

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D7B	#FFFFFF	#000000	##FFFFFF
##233D7B	1.00	10.37	2.03	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B447D

Deuteranopia (green-blind)

#043C7A

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233d7b;
/* rgb */ color: rgb(35, 61, 123);
/* oklch */ color: oklch(37.6% 0.110 264.6);

Tailwind

colors: {
  custom: {
    50: '#6972a2',
    500: '#233d7b',
    950: '#000000',
  },
}

SCSS

$custom: #233d7b;
$custom-light: #6972a2;
$custom-dark: #000000;

JSON

{
  "hex": "#233d7b",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 222.273,
    "s": 55.696,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37583,
    "c": 0.11026,
    "h": 264.6
  },
  "luminance": 0.05125
}

Semantic roles & 50–950 ramp

primary

#233D7B

secondary

#AE914C

accent

#B349DF

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #233D7B

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

Preview Lab → · Contrast checker → · Palette generator →