#233B9E#233B9E

#233B9E is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.1% C 0.163 H 267.7°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#233B9E
RGB	rgb(35, 59, 158)
HSL	hsl(228, 64%, 38%)
HSV	hsv(228, 78%, 62%)
CMYK	cmyk(77.8%, 62.7%, 0%, 38%)
CIE-LAB	lab(29.29, 27.72, -56.31)
CIE-LCH	lch(29.29, 62.77, 296.21°)
OKLab	oklab(40.11% -0.0067 -0.1628)
OKLCH	oklch(40.11% 0.163 267.7)
XYZ	xyz(8.4265, 5.9529, 33.0460)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B9E #9E8623

analogous

#23789E #233B9E #49239E

triadic

#233B9E #9E233B #3B9E23

tetradic

#233B9E #9E2378 #9E8623 #239E49

square

#233B9E #9E2378 #9E8623 #239E49

split-complementary

#233B9E #9E4923 #789E23

monochromatic

#0D163A #18286C #233B9E #2E4ED0 #6078DC

Accessibility & contrast

On white

9.59

#233B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#233B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B9E

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B9E	#FFFFFF	#000000	##FFFFFF
##233B9E	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#003F9C

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #233b9e;
/* rgb */ color: rgb(35, 59, 158);
/* oklch */ color: oklch(40.1% 0.163 267.7);

Tailwind

colors: {
  custom: {
    50: '#7270bc',
    500: '#233b9e',
    950: '#000000',
  },
}

SCSS

$custom: #233b9e;
$custom-light: #7270bc;
$custom-dark: #000000;

JSON

{
  "hex": "#233b9e",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 158
  },
  "hsl": {
    "h": 228.293,
    "s": 63.731,
    "l": 37.843
  },
  "oklch": {
    "l": 0.40113,
    "c": 0.16294,
    "h": 267.7
  },
  "luminance": 0.05954
}

Semantic roles & 50–950 ramp

primary

#233B9E

secondary

#C1AD5C

accent

#C641E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233B9E

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

Preview Lab → · Contrast checker → · Palette generator →