#305BA3#305BA3

#305BA3 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 47.9% C 0.126 H 260.1°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#305BA3
RGB	rgb(48, 91, 163)
HSL	hsl(218, 55%, 41%)
HSV	hsv(218, 71%, 64%)
CMYK	cmyk(70.6%, 44.2%, 0%, 36.1%)
CIE-LAB	lab(39.16, 10.02, -43.33)
CIE-LCH	lch(39.16, 44.47, 283.02°)
OKLab	oklab(47.86% -0.0216 -0.1239)
OKLCH	oklch(47.86% 0.126 260.1)
XYZ	xyz(11.5685, 10.7537, 36.1092)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305BA3 #A37830

analogous

#3095A3 #305BA3 #3F30A3

triadic

#305BA3 #A3305B #5BA330

tetradic

#305BA3 #A33095 #A37830 #30A33F

square

#305BA3 #A33095 #A37830 #30A33F

split-complementary

#305BA3 #A33F30 #95A330

monochromatic

#142644 #224174 #305BA3 #4778C9 #779BD7

Accessibility & contrast

On white

6.66

#305BA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#305BA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305BA3

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305BA3	#FFFFFF	#000000	##FFFFFF
##305BA3	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3862A6

Deuteranopia (green-blind)

#2457A2

Tritanopia (blue-blind)

#006C77

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #305ba3;
/* rgb */ color: rgb(48, 91, 163);
/* oklch */ color: oklch(47.9% 0.126 260.1);

Tailwind

colors: {
  custom: {
    50: '#7688bf',
    500: '#305ba3',
    950: '#000000',
  },
}

SCSS

$custom: #305ba3;
$custom-light: #7688bf;
$custom-dark: #000000;

JSON

{
  "hex": "#305ba3",
  "rgb": {
    "r": 48,
    "g": 91,
    "b": 163
  },
  "hsl": {
    "h": 217.565,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.47864,
    "c": 0.12573,
    "h": 260.1
  },
  "luminance": 0.10755
}

Semantic roles & 50–950 ramp

primary

#305BA3

secondary

#BFA170

accent

#A74ADE

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #305BA3

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

Preview Lab → · Contrast checker → · Palette generator →