#233A7D#233A7D

#233A7D is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.117 H 266.4°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#233A7D
RGB	rgb(35, 58, 125)
HSL	hsl(225, 56%, 31%)
HSV	hsv(225, 72%, 49%)
CMYK	cmyk(72%, 53.6%, 0%, 51%)
CIE-LAB	lab(26.34, 15.54, -40.73)
CIE-LCH	lch(26.34, 43.60, 290.88°)
OKLab	oklab(37.06% -0.0073 -0.117)
OKLCH	oklch(37.06% 0.117 266.4)
XYZ	xyz(5.9066, 4.8635, 20.0255)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A7D #7D6623

analogous

#23677D #233A7D #39237D

triadic

#233A7D #7D233A #3A7D23

tetradic

#233A7D #7D2367 #7D6623 #237D39

square

#233A7D #7D2367 #7D6623 #237D39

split-complementary

#233A7D #7D3923 #677D23

monochromatic

#080E1D #16244D #233A7D #3050AD #4D6ECD

Accessibility & contrast

On white

10.64

#233A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#233A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A7D

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A7D	#FFFFFF	#000000	##FFFFFF
##233A7D	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10437F

Deuteranopia (green-blind)

#003A7C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233a7d;
/* rgb */ color: rgb(35, 58, 125);
/* oklch */ color: oklch(37.1% 0.117 266.4);

Tailwind

colors: {
  custom: {
    50: '#6a6fa3',
    500: '#233a7d',
    950: '#000000',
  },
}

SCSS

$custom: #233a7d;
$custom-light: #6a6fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#233a7d",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 125
  },
  "hsl": {
    "h": 224.667,
    "s": 56.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37063,
    "c": 0.11727,
    "h": 266.4
  },
  "luminance": 0.04864
}

Semantic roles & 50–950 ramp

primary

#233A7D

secondary

#AF964C

accent

#B948E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #233A7D

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

Preview Lab → · Contrast checker → · Palette generator →