#285DB3#285DB3

#285DB3 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.1% C 0.148 H 259.7°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#285DB3
RGB	rgb(40, 93, 179)
HSL	hsl(217, 63%, 43%)
HSV	hsv(217, 78%, 70%)
CMYK	cmyk(77.7%, 48%, 0%, 29.8%)
CIE-LAB	lab(40.46, 13.73, -50.72)
CIE-LCH	lch(40.46, 52.54, 285.14°)
OKLab	oklab(49.11% -0.0264 -0.1457)
OKLCH	oklch(49.11% 0.148 259.7)
XYZ	xyz(12.9231, 11.5330, 44.1841)
Luminance	0.1153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#285DB3 #B37E28

analogous

#28A2B3 #285DB3 #3828B3

triadic

#285DB3 #B3285D #5DB328

tetradic

#285DB3 #B328A2 #B37E28 #28B338

square

#285DB3 #B328A2 #B37E28 #28B338

split-complementary

#285DB3 #B33828 #A2B328

monochromatic

#12294F #1D4381 #285DB3 #437BD5 #759EE0

Accessibility & contrast

On white

6.35

#285DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#285DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #285DB3

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##285DB3	#FFFFFF	#000000	##FFFFFF
##285DB3	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D66B6

Deuteranopia (green-blind)

#0059B1

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #285db3;
/* rgb */ color: rgb(40, 93, 179);
/* oklch */ color: oklch(49.1% 0.148 259.7);

Tailwind

colors: {
  custom: {
    50: '#778aca',
    500: '#285db3',
    950: '#000000',
  },
}

SCSS

$custom: #285db3;
$custom-light: #778aca;
$custom-dark: #000000;

JSON

{
  "hex": "#285db3",
  "rgb": {
    "r": 40,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 217.122,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49112,
    "c": 0.14805,
    "h": 259.7
  },
  "luminance": 0.11534
}

Semantic roles & 50–950 ramp

primary

#285DB3

secondary

#C8A66F

accent

#A841E6

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #285DB3

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

Preview Lab → · Contrast checker → · Palette generator →