#233D83#233D83

#233D83 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.122 H 265.6°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#233D83
RGB	rgb(35, 61, 131)
HSL	hsl(224, 58%, 33%)
HSV	hsv(224, 73%, 51%)
CMYK	cmyk(73.3%, 53.4%, 0%, 48.6%)
CIE-LAB	lab(27.66, 15.82, -42.36)
CIE-LCH	lch(27.66, 45.22, 290.48°)
OKLab	oklab(38.21% -0.0094 -0.1218)
OKLCH	oklch(38.21% 0.122 265.6)
XYZ	xyz(6.4572, 5.3328, 22.1574)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D83 #836923

analogous

#236D83 #233D83 #392383

triadic

#233D83 #83233D #3D8323

tetradic

#233D83 #83236D #836923 #238339

square

#233D83 #83236D #836923 #238339

split-complementary

#233D83 #833923 #6D8323

monochromatic

#091022 #162753 #233D83 #3053B3 #5073D0

Accessibility & contrast

On white

10.16

#233D83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#233D83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D83

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D83	#FFFFFF	#000000	##FFFFFF
##233D83	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104685

Deuteranopia (green-blind)

#003D82

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233d83;
/* rgb */ color: rgb(35, 61, 131);
/* oklch */ color: oklch(38.2% 0.122 265.6);

Tailwind

colors: {
  custom: {
    50: '#6b72a8',
    500: '#233d83',
    950: '#000000',
  },
}

SCSS

$custom: #233d83;
$custom-light: #6b72a8;
$custom-dark: #000000;

JSON

{
  "hex": "#233d83",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 131
  },
  "hsl": {
    "h": 223.75,
    "s": 57.831,
    "l": 32.549
  },
  "oklch": {
    "l": 0.38207,
    "c": 0.12213,
    "h": 265.6
  },
  "luminance": 0.05334
}

Semantic roles & 50–950 ramp

primary

#233D83

secondary

#B4984E

accent

#B747E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #233D83

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

Preview Lab → · Contrast checker → · Palette generator →