#28357E#28357E

#28357E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.124 H 271.3°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#28357E
RGB	rgb(40, 53, 126)
HSL	hsl(231, 52%, 33%)
HSV	hsv(231, 68%, 49%)
CMYK	cmyk(68.3%, 57.9%, 0%, 50.6%)
CIE-LAB	lab(25.27, 20.23, -43.09)
CIE-LCH	lch(25.27, 47.60, 295.15°)
OKLab	oklab(36.35% 0.0027 -0.1239)
OKLCH	oklch(36.35% 0.124 271.3)
XYZ	xyz(5.9128, 4.5031, 20.2922)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28357E #7E7128

analogous

#28607E #28357E #46287E

triadic

#28357E #7E2835 #357E28

tetradic

#28357E #7E2860 #7E7128 #287E46

square

#28357E #7E2860 #7E7128 #287E46

split-complementary

#28357E #7E4628 #607E28

monochromatic

#0B0E21 #192150 #28357E #3749AC #5768CA

Accessibility & contrast

On white

11.05

#28357E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#28357E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28357E

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28357E	#FFFFFF	#000000	##FFFFFF
##28357E	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004081

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #28357e;
/* rgb */ color: rgb(40, 53, 126);
/* oklch */ color: oklch(36.4% 0.124 271.3);

Tailwind

colors: {
  custom: {
    50: '#6d6ca4',
    500: '#28357e',
    950: '#000000',
  },
}

SCSS

$custom: #28357e;
$custom-light: #6d6ca4;
$custom-dark: #000000;

JSON

{
  "hex": "#28357e",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 126
  },
  "hsl": {
    "h": 230.93,
    "s": 51.807,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36355,
    "c": 0.12395,
    "h": 271.3
  },
  "luminance": 0.04504
}

Semantic roles & 50–950 ramp

primary

#28357E

secondary

#AFA153

accent

#C64DDB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28357E

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

Preview Lab → · Contrast checker → · Palette generator →