#4259B9#4259B9

#4259B9 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 49.9% C 0.153 H 269.9°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#4259B9
RGB	rgb(66, 89, 185)
HSL	hsl(228, 47%, 49%)
HSV	hsv(228, 64%, 73%)
CMYK	cmyk(64.3%, 51.9%, 0%, 27.5%)
CIE-LAB	lab(40.90, 22.34, -53.47)
CIE-LCH	lch(40.90, 57.95, 292.68°)
OKLab	oklab(49.89% -0.0003 -0.1534)
OKLCH	oklch(49.89% 0.153 269.9)
XYZ	xyz(14.5731, 11.8045, 47.4000)
Luminance	0.1181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259B9 #B9A242

analogous

#4295B9 #4259B9 #6742B9

triadic

#4259B9 #B94259 #59B942

tetradic

#4259B9 #B94295 #B9A242 #42B967

square

#4259B9 #B94295 #B9A242 #42B967

split-complementary

#4259B9 #B96742 #95B942

monochromatic

#222E5F #32438C #4259B9 #6D7FCB #9AA7DB

Accessibility & contrast

On white

6.25

#4259B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#4259B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259B9

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259B9	#FFFFFF	#000000	##FFFFFF
##4259B9	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F66BC

Deuteranopia (green-blind)

#005BB7

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4259b9;
/* rgb */ color: rgb(66, 89, 185);
/* oklch */ color: oklch(49.9% 0.153 269.9);

Tailwind

colors: {
  custom: {
    50: '#8387cf',
    500: '#4259b9',
    950: '#000000',
  },
}

SCSS

$custom: #4259b9;
$custom-light: #8387cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4259b9",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 185
  },
  "hsl": {
    "h": 228.403,
    "s": 47.41,
    "l": 49.216
  },
  "oklch": {
    "l": 0.49889,
    "c": 0.15337,
    "h": 269.9
  },
  "luminance": 0.11806
}

Semantic roles & 50–950 ramp

primary

#4259B9

secondary

#C7BC90

accent

#BD51D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4259B9

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

Preview Lab → · Contrast checker → · Palette generator →