#233F83#233F83

#233F83 is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.7% C 0.119 H 264.6°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#233F83
RGB	rgb(35, 63, 131)
HSL	hsl(223, 58%, 33%)
HSV	hsv(223, 73%, 51%)
CMYK	cmyk(73.3%, 51.9%, 0%, 48.6%)
CIE-LAB	lab(28.25, 14.43, -41.41)
CIE-LCH	lch(28.25, 43.86, 289.21°)
OKLab	oklab(38.65% -0.0113 -0.1189)
OKLCH	oklch(38.65% 0.119 264.6)
XYZ	xyz(6.5659, 5.5503, 22.1936)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F83 #836723

analogous

#236F83 #233F83 #372383

triadic

#233F83 #83233F #3F8323

tetradic

#233F83 #83236F #836723 #238337

square

#233F83 #83236F #836723 #238337

split-complementary

#233F83 #833723 #6F8323

monochromatic

#091122 #162853 #233F83 #3056B3 #5076D0

Accessibility & contrast

On white

9.95

#233F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#233F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F83

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F83	#FFFFFF	#000000	##FFFFFF
##233F83	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174785

Deuteranopia (green-blind)

#003E82

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #233f83;
/* rgb */ color: rgb(35, 63, 131);
/* oklch */ color: oklch(38.7% 0.119 264.6);

Tailwind

colors: {
  custom: {
    50: '#6b73a7',
    500: '#233f83',
    950: '#000000',
  },
}

SCSS

$custom: #233f83;
$custom-light: #6b73a7;
$custom-dark: #000000;

JSON

{
  "hex": "#233f83",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 131
  },
  "hsl": {
    "h": 222.5,
    "s": 57.831,
    "l": 32.549
  },
  "oklch": {
    "l": 0.38652,
    "c": 0.11948,
    "h": 264.6
  },
  "luminance": 0.05551
}

Semantic roles & 50–950 ramp

primary

#233F83

secondary

#B4964E

accent

#B447E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #233F83

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

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