#263B8F#263B8F

#263B8F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.141 H 268.4°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#263B8F
RGB	rgb(38, 59, 143)
HSL	hsl(228, 58%, 35%)
HSV	hsv(228, 73%, 56%)
CMYK	cmyk(73.4%, 58.7%, 0%, 43.9%)
CIE-LAB	lab(28.17, 22.32, -48.96)
CIE-LCH	lch(28.17, 53.81, 294.51°)
OKLab	oklab(38.93% -0.004 -0.1412)
OKLCH	oklch(38.93% 0.141 268.4)
XYZ	xyz(7.3195, 5.5224, 26.6615)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263B8F #8F7A26

analogous

#266F8F #263B8F #45268F

triadic

#263B8F #8F263B #3B8F26

tetradic

#263B8F #8F266F #8F7A26 #268F45

square

#263B8F #8F266F #8F7A26 #268F45

split-complementary

#263B8F #8F4526 #6F8F26

monochromatic

#0C132E #19275F #263B8F #334FBF #5C74D4

Accessibility & contrast

On white

9.98

#263B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#263B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263B8F

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263B8F	#FFFFFF	#000000	##FFFFFF
##263B8F	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003E8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #263b8f;
/* rgb */ color: rgb(38, 59, 143);
/* oklch */ color: oklch(38.9% 0.141 268.4);

Tailwind

colors: {
  custom: {
    50: '#6f70b0',
    500: '#263b8f',
    950: '#000000',
  },
}

SCSS

$custom: #263b8f;
$custom-light: #6f70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#263b8f",
  "rgb": {
    "r": 38,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 228,
    "s": 58.011,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38926,
    "c": 0.14122,
    "h": 268.4
  },
  "luminance": 0.05523
}

Semantic roles & 50–950 ramp

primary

#263B8F

secondary

#B9A558

accent

#C247E1

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #263B8F

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

Preview Lab → · Contrast checker → · Palette generator →