#233F8A#233F8A

#233F8A is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.130 H 265.4°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#233F8A
RGB	rgb(35, 63, 138)
HSL	hsl(224, 60%, 34%)
HSV	hsv(224, 75%, 54%)
CMYK	cmyk(74.6%, 54.3%, 0%, 45.9%)
CIE-LAB	lab(28.76, 17.20, -44.92)
CIE-LCH	lch(28.76, 48.10, 290.95°)
OKLab	oklab(39.21% -0.0105 -0.1293)
OKLCH	oklch(39.21% 0.13 265.4)
XYZ	xyz(7.0565, 5.7466, 24.7771)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F8A #8A6E23

analogous

#23738A #233F8A #3A238A

triadic

#233F8A #8A233F #3F8A23

tetradic

#233F8A #8A2373 #8A6E23 #238A3A

square

#233F8A #8A2373 #8A6E23 #238A3A

split-complementary

#233F8A #8A3A23 #738A23

monochromatic

#0A1228 #172959 #233F8A #2F55BB #5477D4

Accessibility & contrast

On white

9.77

#233F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#233F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F8A

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F8A	#FFFFFF	#000000	##FFFFFF
##233F8A	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09498D

Deuteranopia (green-blind)

#003F89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233f8a;
/* rgb */ color: rgb(35, 63, 138);
/* oklch */ color: oklch(39.2% 0.130 265.4);

Tailwind

colors: {
  custom: {
    50: '#6d73ad',
    500: '#233f8a',
    950: '#000000',
  },
}

SCSS

$custom: #233f8a;
$custom-light: #6d73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#233f8a",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 223.689,
    "s": 59.538,
    "l": 33.922
  },
  "oklch": {
    "l": 0.39207,
    "c": 0.1297,
    "h": 265.4
  },
  "luminance": 0.05747
}

Semantic roles & 50–950 ramp

primary

#233F8A

secondary

#B79C51

accent

#B845E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #233F8A

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

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