#233B64#233B64

#233B64 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.078 H 260.5°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#233B64
RGB	rgb(35, 59, 100)
HSL	hsl(218, 48%, 26%)
HSV	hsv(218, 65%, 39%)
CMYK	cmyk(65%, 41%, 0%, 60.8%)
CIE-LAB	lab(24.97, 5.05, -26.99)
CIE-LCH	lch(24.97, 27.46, 280.60°)
OKLab	oklab(35.47% -0.0128 -0.0766)
OKLCH	oklch(35.47% 0.078 260.5)
XYZ	xyz(4.5565, 4.4049, 12.6642)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B64 #644C23

analogous

#235C64 #233B64 #2C2364

triadic

#233B64 #64233B #3B6423

tetradic

#233B64 #64235C #644C23 #23642C

square

#233B64 #64235C #644C23 #23642C

split-complementary

#233B64 #642C23 #5C6423

monochromatic

#080D17 #132037 #233B64 #335691 #4471BE

Accessibility & contrast

On white

11.16

#233B64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#233B64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B64

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B64	#FFFFFF	#000000	##FFFFFF
##233B64	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293F66

Deuteranopia (green-blind)

#203863

Tritanopia (blue-blind)

#00444A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #233b64;
/* rgb */ color: rgb(35, 59, 100);
/* oklch */ color: oklch(35.5% 0.078 260.5);

Tailwind

colors: {
  custom: {
    50: '#657090',
    500: '#233b64',
    950: '#000000',
  },
}

SCSS

$custom: #233b64;
$custom-light: #657090;
$custom-dark: #000000;

JSON

{
  "hex": "#233b64",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 100
  },
  "hsl": {
    "h": 217.846,
    "s": 48.148,
    "l": 26.471
  },
  "oklch": {
    "l": 0.35468,
    "c": 0.07772,
    "h": 260.5
  },
  "luminance": 0.04405
}

Semantic roles & 50–950 ramp

primary

#233B64

secondary

#987B4B

accent

#A650D8

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #233B64

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

Preview Lab → · Contrast checker → · Palette generator →