#305BA4#305BA4

#305BA4 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 47.9% C 0.127 H 260.3°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#305BA4
RGB	rgb(48, 91, 164)
HSL	hsl(218, 55%, 42%)
HSV	hsv(218, 71%, 64%)
CMYK	cmyk(70.7%, 44.5%, 0%, 35.7%)
CIE-LAB	lab(39.22, 10.40, -43.83)
CIE-LCH	lch(39.22, 45.04, 283.34°)
OKLab	oklab(47.93% -0.0214 -0.1253)
OKLCH	oklch(47.93% 0.127 260.3)
XYZ	xyz(11.6584, 10.7897, 36.5830)
Luminance	0.1079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305BA4 #A47930

analogous

#3095A4 #305BA4 #3F30A4

triadic

#305BA4 #A4305B #5BA430

tetradic

#305BA4 #A43095 #A47930 #30A43F

square

#305BA4 #A43095 #A47930 #30A43F

split-complementary

#305BA4 #A43F30 #95A430

monochromatic

#142645 #224175 #305BA4 #4878C9 #779BD7

Accessibility & contrast

On white

6.65

#305BA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#305BA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305BA4

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305BA4	#FFFFFF	#000000	##FFFFFF
##305BA4	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3762A7

Deuteranopia (green-blind)

#2257A3

Tritanopia (blue-blind)

#006C77

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #305ba4;
/* rgb */ color: rgb(48, 91, 164);
/* oklch */ color: oklch(47.9% 0.127 260.3);

Tailwind

colors: {
  custom: {
    50: '#7688bf',
    500: '#305ba4',
    950: '#000000',
  },
}

SCSS

$custom: #305ba4;
$custom-light: #7688bf;
$custom-dark: #000000;

JSON

{
  "hex": "#305ba4",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 164
  },
  "hsl": {
    "h": 217.759,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.47931,
    "c": 0.12714,
    "h": 260.3
  },
  "luminance": 0.10791
}

Semantic roles & 50–950 ramp

primary

#305BA4

secondary

#BFA270

accent

#A74ADE

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #305BA4

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

Preview Lab → · Contrast checker → · Palette generator →