#303C97#303C97

#303C97 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.148 H 272.2°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#303C97
RGB	rgb(48, 60, 151)
HSL	hsl(233, 52%, 39%)
HSV	hsv(233, 68%, 59%)
CMYK	cmyk(68.2%, 60.3%, 0%, 40.8%)
CIE-LAB	lab(29.65, 26.12, -51.45)
CIE-LCH	lch(29.65, 57.70, 296.92°)
OKLab	oklab(40.38% 0.0057 -0.1482)
OKLCH	oklch(40.38% 0.148 272.2)
XYZ	xyz(8.4188, 6.0937, 30.0047)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303C97 #978B30

analogous

#307097 #303C97 #583097

triadic

#303C97 #97303C #3C9730

tetradic

#303C97 #973070 #978B30 #309758

square

#303C97 #973070 #978B30 #309758

split-complementary

#303C97 #975830 #709730

monochromatic

#12173A #212A69 #303C97 #4151C3 #707BD2

Accessibility & contrast

On white

9.46

#303C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#303C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303C97

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303C97	#FFFFFF	#000000	##FFFFFF
##303C97	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9A

Deuteranopia (green-blind)

#004195

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #303c97;
/* rgb */ color: rgb(48, 60, 151);
/* oklch */ color: oklch(40.4% 0.148 272.2);

Tailwind

colors: {
  custom: {
    50: '#7571b6',
    500: '#303c97',
    950: '#000000',
  },
}

SCSS

$custom: #303c97;
$custom-light: #7571b6;
$custom-dark: #000000;

JSON

{
  "hex": "#303c97",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 151
  },
  "hsl": {
    "h": 233.01,
    "s": 51.759,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40377,
    "c": 0.14832,
    "h": 272.2
  },
  "luminance": 0.06094
}

Semantic roles & 50–950 ramp

primary

#303C97

secondary

#B9B06A

accent

#CB4DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #303C97

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

Preview Lab → · Contrast checker → · Palette generator →