#28458B#28458B

#28458B is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.8% C 0.122 H 264.7°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#28458B
RGB	rgb(40, 69, 139)
HSL	hsl(222, 55%, 35%)
HSV	hsv(222, 71%, 55%)
CMYK	cmyk(71.2%, 50.4%, 0%, 45.5%)
CIE-LAB	lab(30.81, 14.23, -42.23)
CIE-LCH	lch(30.81, 44.56, 288.62°)
OKLab	oklab(40.85% -0.0113 -0.1211)
OKLCH	oklch(40.85% 0.122 264.7)
XYZ	xyz(7.6618, 6.5707, 25.2856)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28458B #8B6E28

analogous

#28778B #28458B #3C288B

triadic

#28458B #8B2845 #458B28

tetradic

#28458B #8B2877 #8B6E28 #288B3C

square

#28458B #8B2877 #8B6E28 #288B3C

split-complementary

#28458B #8B3C28 #778B28

monochromatic

#0D162C #1A2D5B #28458B #365DBB #5D7FD0

Accessibility & contrast

On white

9.07

#28458B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#28458B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28458B

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28458B	#FFFFFF	#000000	##FFFFFF
##28458B	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4D8E

Deuteranopia (green-blind)

#01448A

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #28458b;
/* rgb */ color: rgb(40, 69, 139);
/* oklch */ color: oklch(40.8% 0.122 264.7);

Tailwind

colors: {
  custom: {
    50: '#6f78ad',
    500: '#28458b',
    950: '#000000',
  },
}

SCSS

$custom: #28458b;
$custom-light: #6f78ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28458b",
  "rgb": {
    "r": 40,
    "g": 69,
    "b": 139
  },
  "hsl": {
    "h": 222.424,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.40849,
    "c": 0.12168,
    "h": 264.7
  },
  "luminance": 0.06571
}

Semantic roles & 50–950 ramp

primary

#28458B

secondary

#B69B59

accent

#B349DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #28458B

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

Preview Lab → · Contrast checker → · Palette generator →