#233F87#233F87

#233F87 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.0% C 0.125 H 265.1°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#233F87
RGB	rgb(35, 63, 135)
HSL	hsl(223, 59%, 33%)
HSV	hsv(223, 74%, 53%)
CMYK	cmyk(74.1%, 53.3%, 0%, 47.1%)
CIE-LAB	lab(28.54, 16.01, -43.43)
CIE-LCH	lch(28.54, 46.29, 290.24°)
OKLab	oklab(38.97% -0.0108 -0.1249)
OKLCH	oklch(38.97% 0.125 265.1)
XYZ	xyz(6.8423, 5.6609, 23.6490)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F87 #876B23

analogous

#237187 #233F87 #392387

triadic

#233F87 #87233F #3F8723

tetradic

#233F87 #872371 #876B23 #238739

square

#233F87 #872371 #876B23 #238739

split-complementary

#233F87 #873923 #718723

monochromatic

#0A1226 #162856 #233F87 #3056B8 #5276D2

Accessibility & contrast

On white

9.85

#233F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#233F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F87

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F87	#FFFFFF	#000000	##FFFFFF
##233F87	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10488A

Deuteranopia (green-blind)

#003F86

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #233f87;
/* rgb */ color: rgb(35, 63, 135);
/* oklch */ color: oklch(39.0% 0.125 265.1);

Tailwind

colors: {
  custom: {
    50: '#6c73aa',
    500: '#233f87',
    950: '#000000',
  },
}

SCSS

$custom: #233f87;
$custom-light: #6c73aa;
$custom-dark: #000000;

JSON

{
  "hex": "#233f87",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 135
  },
  "hsl": {
    "h": 223.2,
    "s": 58.824,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38967,
    "c": 0.12535,
    "h": 265.1
  },
  "luminance": 0.05662
}

Semantic roles & 50–950 ramp

primary

#233F87

secondary

#B69950

accent

#B646E2

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #233F87

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

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