#233DA3#233DA3

#233DA3 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.167 H 267.3°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#233DA3
RGB	rgb(35, 61, 163)
HSL	hsl(228, 65%, 39%)
HSV	hsv(228, 79%, 64%)
CMYK	cmyk(78.5%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(30.25, 28.29, -57.77)
CIE-LCH	lch(30.25, 64.33, 296.09°)
OKLab	oklab(40.96% -0.008 -0.1671)
OKLCH	oklch(40.96% 0.167 267.3)
XYZ	xyz(8.9704, 6.3381, 35.3938)
Luminance	0.0634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233DA3 #A38923

analogous

#237DA3 #233DA3 #4923A3

triadic

#233DA3 #A3233D #3DA323

tetradic

#233DA3 #A3237D #A38923 #23A349

square

#233DA3 #A3237D #A38923 #23A349

split-complementary

#233DA3 #A34923 #7DA323

monochromatic

#0D173E #182A71 #233DA3 #3151D3 #637CDD

Accessibility & contrast

On white

9.26

#233DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#233DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233DA3

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233DA3	#FFFFFF	#000000	##FFFFFF
##233DA3	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA6

Deuteranopia (green-blind)

#0041A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #233da3;
/* rgb */ color: rgb(35, 61, 163);
/* oklch */ color: oklch(41.0% 0.167 267.3);

Tailwind

colors: {
  custom: {
    50: '#7372bf',
    500: '#233da3',
    950: '#000000',
  },
}

SCSS

$custom: #233da3;
$custom-light: #7372bf;
$custom-dark: #000000;

JSON

{
  "hex": "#233da3",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 227.813,
    "s": 64.646,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40957,
    "c": 0.16725,
    "h": 267.3
  },
  "luminance": 0.06339
}

Semantic roles & 50–950 ramp

primary

#233DA3

secondary

#C3AE5F

accent

#C640E8

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233DA3

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

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