#233B5D#233B5D

#233B5D is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.0% C 0.067 H 257.2°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#233B5D
RGB	rgb(35, 59, 93)
HSL	hsl(215, 45%, 25%)
HSV	hsv(215, 62%, 36%)
CMYK	cmyk(62.4%, 36.6%, 0%, 63.5%)
CIE-LAB	lab(24.56, 2.39, -23.09)
CIE-LCH	lch(24.56, 23.21, 275.90°)
OKLab	oklab(35.02% -0.0148 -0.0653)
OKLCH	oklch(35.02% 0.067 257.2)
XYZ	xyz(4.2322, 4.2752, 10.9560)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B5D #5D4523

analogous

#23585D #233B5D #28235D

triadic

#233B5D #5D233B #3B5D23

tetradic

#233B5D #5D2358 #5D4523 #235D28

square

#233B5D #5D2358 #5D4523 #235D28

split-complementary

#233B5D #5D2823 #585D23

monochromatic

#080E16 #121F31 #233B5D #345789 #4473B6

Accessibility & contrast

On white

11.32

#233B5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#233B5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B5D

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B5D	#FFFFFF	#000000	##FFFFFF
##233B5D	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3D5E

Deuteranopia (green-blind)

#25385C

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #233b5d;
/* rgb */ color: rgb(35, 59, 93);
/* oklch */ color: oklch(35.0% 0.067 257.2);

Tailwind

colors: {
  custom: {
    50: '#63708b',
    500: '#233b5d',
    950: '#000000',
  },
}

SCSS

$custom: #233b5d;
$custom-light: #63708b;
$custom-dark: #000000;

JSON

{
  "hex": "#233b5d",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 93
  },
  "hsl": {
    "h": 215.172,
    "s": 45.312,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35019,
    "c": 0.06692,
    "h": 257.2
  },
  "luminance": 0.04276
}

Semantic roles & 50–950 ramp

primary

#233B5D

secondary

#91744B

accent

#9F53D5

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #233B5D

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

Preview Lab → · Contrast checker → · Palette generator →