#233BA8#233BA8

#233BA8 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.176 H 267.8°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#233BA8
RGB	rgb(35, 59, 168)
HSL	hsl(229, 66%, 40%)
HSV	hsv(229, 79%, 66%)
CMYK	cmyk(79.2%, 64.9%, 0%, 34.1%)
CIE-LAB	lab(30.18, 31.52, -60.89)
CIE-LCH	lch(30.18, 68.56, 297.36°)
OKLab	oklab(41.05% -0.0069 -0.1762)
OKLCH	oklch(41.05% 0.176 267.8)
XYZ	xyz(9.3225, 6.3113, 37.7651)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233BA8 #A89023

analogous

#237EA8 #233BA8 #4E23A8

triadic

#233BA8 #A8233B #3BA823

tetradic

#233BA8 #A8237E #A89023 #23A84E

square

#233BA8 #A8237E #A89023 #23A84E

split-complementary

#233BA8 #A84E23 #7EA823

monochromatic

#0E1743 #182975 #233BA8 #3451D5 #667CDF

Accessibility & contrast

On white

9.28

#233BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#233BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233BA8

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233BA8	#FFFFFF	#000000	##FFFFFF
##233BA8	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAB

Deuteranopia (green-blind)

#0041A6

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #233ba8;
/* rgb */ color: rgb(35, 59, 168);
/* oklch */ color: oklch(41.0% 0.176 267.8);

Tailwind

colors: {
  custom: {
    50: '#7570c3',
    500: '#233ba8',
    950: '#000000',
  },
}

SCSS

$custom: #233ba8;
$custom-light: #7570c3;
$custom-dark: #000000;

JSON

{
  "hex": "#233ba8",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 168
  },
  "hsl": {
    "h": 229.173,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41046,
    "c": 0.17634,
    "h": 267.8
  },
  "luminance": 0.06312
}

Semantic roles & 50–950 ramp

primary

#233BA8

secondary

#C5B362

accent

#CA3FE8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #233BA8

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

Preview Lab → · Contrast checker → · Palette generator →