#233D8E#233D8E

#233D8E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.138 H 266.5°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#233D8E
RGB	rgb(35, 61, 142)
HSL	hsl(225, 60%, 35%)
HSV	hsv(225, 75%, 56%)
CMYK	cmyk(75.4%, 57%, 0%, 44.3%)
CIE-LAB	lab(28.50, 20.15, -47.82)
CIE-LCH	lch(28.50, 51.89, 292.85°)
OKLab	oklab(39.11% -0.0085 -0.1378)
OKLCH	oklch(39.11% 0.138 266.5)
XYZ	xyz(7.2427, 5.6470, 26.2942)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D8E #8E7423

analogous

#23728E #233D8E #3F238E

triadic

#233D8E #8E233D #3D8E23

tetradic

#233D8E #8E2372 #8E7423 #238E3F

square

#233D8E #8E2372 #8E7423 #238E3F

split-complementary

#233D8E #8E3F23 #728E23

monochromatic

#0B132C #17285D #233D8E #2F52BF #5675D5

Accessibility & contrast

On white

9.86

#233D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#233D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D8E

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D8E	#FFFFFF	#000000	##FFFFFF
##233D8E	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #233d8e;
/* rgb */ color: rgb(35, 61, 142);
/* oklch */ color: oklch(39.1% 0.138 266.5);

Tailwind

colors: {
  custom: {
    50: '#6e72b0',
    500: '#233d8e',
    950: '#000000',
  },
}

SCSS

$custom: #233d8e;
$custom-light: #6e72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#233d8e",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 142
  },
  "hsl": {
    "h": 225.421,
    "s": 60.452,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39109,
    "c": 0.13808,
    "h": 266.5
  },
  "luminance": 0.05648
}

Semantic roles & 50–950 ramp

primary

#233D8E

secondary

#B9A153

accent

#BD44E4

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233D8E

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

Preview Lab → · Contrast checker → · Palette generator →