#233A63#233A63

#233A63 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.2% C 0.077 H 261.2°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#233A63
RGB	rgb(35, 58, 99)
HSL	hsl(218, 48%, 26%)
HSV	hsv(218, 65%, 39%)
CMYK	cmyk(64.6%, 41.4%, 0%, 61.2%)
CIE-LAB	lab(24.59, 5.36, -26.95)
CIE-LCH	lch(24.59, 27.47, 281.25°)
OKLab	oklab(35.15% -0.0119 -0.0765)
OKLCH	oklch(35.15% 0.077 261.2)
XYZ	xyz(4.4575, 4.2839, 12.3939)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A63 #634C23

analogous

#235A63 #233A63 #2C2363

triadic

#233A63 #63233A #3A6323

tetradic

#233A63 #63235A #634C23 #23632C

square

#233A63 #63235A #634C23 #23632C

split-complementary

#233A63 #632C23 #5A6323

monochromatic

#080D17 #132036 #233A63 #335490 #446FBD

Accessibility & contrast

On white

11.31

#233A63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#233A63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A63

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A63	#FFFFFF	#000000	##FFFFFF
##233A63	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283E65

Deuteranopia (green-blind)

#203862

Tritanopia (blue-blind)

#004349

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #233a63;
/* rgb */ color: rgb(35, 58, 99);
/* oklch */ color: oklch(35.2% 0.077 261.2);

Tailwind

colors: {
  custom: {
    50: '#646f8f',
    500: '#233a63',
    950: '#000000',
  },
}

SCSS

$custom: #233a63;
$custom-light: #646f8f;
$custom-dark: #000000;

JSON

{
  "hex": "#233a63",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 99
  },
  "hsl": {
    "h": 218.438,
    "s": 47.761,
    "l": 26.275
  },
  "oklch": {
    "l": 0.35155,
    "c": 0.07745,
    "h": 261.2
  },
  "luminance": 0.04284
}

Semantic roles & 50–950 ramp

primary

#233A63

secondary

#977C4B

accent

#A750D7

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #233A63

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

Preview Lab → · Contrast checker → · Palette generator →