#233B70#233B70

#233B70 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.3% C 0.096 H 263.9°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#233B70
RGB	rgb(35, 59, 112)
HSL	hsl(221, 52%, 29%)
HSV	hsv(221, 69%, 44%)
CMYK	cmyk(68.8%, 47.3%, 0%, 56.1%)
CIE-LAB	lab(25.73, 9.72, -33.49)
CIE-LCH	lch(25.73, 34.87, 286.18°)
OKLab	oklab(36.3% -0.0102 -0.0957)
OKLCH	oklch(36.3% 0.096 263.9)
XYZ	xyz(5.1807, 4.6546, 15.9515)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B70 #705823

analogous

#236270 #233B70 #322370

triadic

#233B70 #70233B #3B7023

tetradic

#233B70 #702362 #705823 #237032

square

#233B70 #702362 #705823 #237032

split-complementary

#233B70 #703223 #627023

monochromatic

#070C17 #142241 #233B70 #32549F #486FC6

Accessibility & contrast

On white

10.88

#233B70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#233B70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B70

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B70	#FFFFFF	#000000	##FFFFFF
##233B70	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214172

Deuteranopia (green-blind)

#143A6F

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #233b70;
/* rgb */ color: rgb(35, 59, 112);
/* oklch */ color: oklch(36.3% 0.096 263.9);

Tailwind

colors: {
  custom: {
    50: '#677099',
    500: '#233b70',
    950: '#000000',
  },
}

SCSS

$custom: #233b70;
$custom-light: #677099;
$custom-dark: #000000;

JSON

{
  "hex": "#233b70",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 112
  },
  "hsl": {
    "h": 221.299,
    "s": 52.381,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36301,
    "c": 0.09625,
    "h": 263.9
  },
  "luminance": 0.04655
}

Semantic roles & 50–950 ramp

primary

#233B70

secondary

#A3884C

accent

#AF4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #233B70

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

Preview Lab → · Contrast checker → · Palette generator →