#28458C#28458C

#28458C is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.9% C 0.123 H 264.8°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#28458C
RGB	rgb(40, 69, 140)
HSL	hsl(223, 56%, 35%)
HSV	hsv(223, 71%, 55%)
CMYK	cmyk(71.4%, 50.7%, 0%, 45.1%)
CIE-LAB	lab(30.88, 14.62, -42.73)
CIE-LCH	lch(30.88, 45.16, 288.88°)
OKLab	oklab(40.92% -0.0112 -0.1226)
OKLCH	oklch(40.92% 0.123 264.8)
XYZ	xyz(7.7352, 6.6000, 25.6721)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28458C #8C6F28

analogous

#28778C #28458C #3D288C

triadic

#28458C #8C2845 #458C28

tetradic

#28458C #8C2877 #8C6F28 #288C3D

square

#28458C #8C2877 #8C6F28 #288C3D

split-complementary

#28458C #8C3D28 #778C28

monochromatic

#0D162D #1A2E5C #28458C #365CBC #5E7FD1

Accessibility & contrast

On white

9.05

#28458C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#28458C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28458C

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28458C	#FFFFFF	#000000	##FFFFFF
##28458C	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4E8F

Deuteranopia (green-blind)

#00448B

Tritanopia (blue-blind)

#005662

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #28458c;
/* rgb */ color: rgb(40, 69, 140);
/* oklch */ color: oklch(40.9% 0.123 264.8);

Tailwind

colors: {
  custom: {
    50: '#6f78ae',
    500: '#28458c',
    950: '#000000',
  },
}

SCSS

$custom: #28458c;
$custom-light: #6f78ae;
$custom-dark: #000000;

JSON

{
  "hex": "#28458c",
  "rgb": {
    "r": 40,
    "g": 69,
    "b": 140
  },
  "hsl": {
    "h": 222.6,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.40925,
    "c": 0.12314,
    "h": 264.8
  },
  "luminance": 0.06601
}

Semantic roles & 50–950 ramp

primary

#28458C

secondary

#B69B5A

accent

#B349DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #28458C

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

Preview Lab → · Contrast checker → · Palette generator →