#4259B0#4259B0

#4259B0 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.2% C 0.141 H 269.5°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#4259B0
RGB	rgb(66, 89, 176)
HSL	hsl(227, 45%, 47%)
HSV	hsv(227, 63%, 69%)
CMYK	cmyk(62.5%, 49.4%, 0%, 31%)
CIE-LAB	lab(40.31, 19.16, -49.15)
CIE-LCH	lch(40.31, 52.75, 291.30°)
OKLab	oklab(49.25% -0.0012 -0.1406)
OKLCH	oklch(49.25% 0.141 269.5)
XYZ	xyz(13.6530, 11.4364, 42.5538)
Luminance	0.1144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259B0 #B09942

analogous

#4290B0 #4259B0 #6242B0

triadic

#4259B0 #B04259 #59B042

tetradic

#4259B0 #B04290 #B09942 #42B062

square

#4259B0 #B04290 #B09942 #42B062

split-complementary

#4259B0 #B06242 #90B042

monochromatic

#212C57 #314283 #4259B0 #697CC7 #95A3D7

Accessibility & contrast

On white

6.39

#4259B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#4259B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259B0

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259B0	#FFFFFF	#000000	##FFFFFF
##4259B0	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B64B3

Deuteranopia (green-blind)

#145AAE

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4259b0;
/* rgb */ color: rgb(66, 89, 176);
/* oklch */ color: oklch(49.2% 0.141 269.5);

Tailwind

colors: {
  custom: {
    50: '#8187c8',
    500: '#4259b0',
    950: '#000000',
  },
}

SCSS

$custom: #4259b0;
$custom-light: #8187c8;
$custom-dark: #000000;

JSON

{
  "hex": "#4259b0",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 176
  },
  "hsl": {
    "h": 227.455,
    "s": 45.455,
    "l": 47.451
  },
  "oklch": {
    "l": 0.49245,
    "c": 0.14066,
    "h": 269.5
  },
  "luminance": 0.11438
}

Semantic roles & 50–950 ramp

primary

#4259B0

secondary

#C3B78B

accent

#BA53D5

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #4259B0

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

Preview Lab → · Contrast checker → · Palette generator →