#263F9B#263F9B

#263F9B is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.8% C 0.153 H 267.5°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#263F9B
RGB	rgb(38, 63, 155)
HSL	hsl(227, 61%, 38%)
HSV	hsv(227, 75%, 61%)
CMYK	cmyk(75.5%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(30.24, 24.22, -52.95)
CIE-LCH	lch(30.24, 58.22, 294.58°)
OKLab	oklab(40.77% -0.0068 -0.1528)
OKLCH	oklch(40.77% 0.153 267.5)
XYZ	xyz(8.4912, 6.3327, 31.7788)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263F9B #9B8226

analogous

#267A9B #263F9B #47269B

triadic

#263F9B #9B263F #3F9B26

tetradic

#263F9B #9B267A #9B8226 #269B47

square

#263F9B #9B267A #9B8226 #269B47

split-complementary

#263F9B #9B4726 #7A9B26

monochromatic

#0E1739 #1A2B6A #263F9B #3253CC #637CD9

Accessibility & contrast

On white

9.26

#263F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#263F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263F9B

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263F9B	#FFFFFF	#000000	##FFFFFF
##263F9B	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004299

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #263f9b;
/* rgb */ color: rgb(38, 63, 155);
/* oklch */ color: oklch(40.8% 0.153 267.5);

Tailwind

colors: {
  custom: {
    50: '#7273b9',
    500: '#263f9b',
    950: '#000000',
  },
}

SCSS

$custom: #263f9b;
$custom-light: #7273b9;
$custom-dark: #000000;

JSON

{
  "hex": "#263f9b",
  "rgb": {
    "r": 38,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 227.179,
    "s": 60.622,
    "l": 37.843
  },
  "oklch": {
    "l": 0.40774,
    "c": 0.15296,
    "h": 267.5
  },
  "luminance": 0.06334
}

Semantic roles & 50–950 ramp

primary

#263F9B

secondary

#BEAA5F

accent

#C244E4

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #263F9B

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

Preview Lab → · Contrast checker → · Palette generator →