#301F8D#301F8D

#301F8D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.6% C 0.169 H 279.9°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#301F8D
RGB	rgb(48, 31, 141)
HSL	hsl(249, 64%, 34%)
HSV	hsv(249, 78%, 55%)
CMYK	cmyk(66%, 78%, 0%, 44.7%)
CIE-LAB	lab(22.06, 40.59, -57.72)
CIE-LCH	lch(22.06, 70.56, 305.12°)
OKLab	oklab(34.6% 0.029 -0.1666)
OKLCH	oklch(34.6% 0.169 279.9)
XYZ	xyz(6.5151, 3.5309, 25.5323)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F8D #7C8D1F

analogous

#1F458D #301F8D #671F8D

triadic

#301F8D #8D301F #1F8D30

tetradic

#301F8D #8D1F45 #7C8D1F #1F8D67

square

#301F8D #8D1F45 #7C8D1F #1F8D67

split-complementary

#301F8D #8D671F #458D1F

monochromatic

#0E0929 #1F145B #301F8D #412ABF #644ED8

Accessibility & contrast

On white

12.31

#301F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#301F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F8D

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F8D	#FFFFFF	#000000	##FFFFFF
##301F8D	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003990

Deuteranopia (green-blind)

#00308B

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #301f8d;
/* rgb */ color: rgb(48, 31, 141);
/* oklch */ color: oklch(34.6% 0.169 279.9);

Tailwind

colors: {
  custom: {
    50: '#765daf',
    500: '#301f8d',
    950: '#000000',
  },
}

SCSS

$custom: #301f8d;
$custom-light: #765daf;
$custom-dark: #000000;

JSON

{
  "hex": "#301f8d",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 141
  },
  "hsl": {
    "h": 249.273,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.34598,
    "c": 0.16911,
    "h": 279.9
  },
  "luminance": 0.03531
}

Semantic roles & 50–950 ramp

primary

#301F8D

secondary

#AABB4D

accent

#E741CD

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #301F8D

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

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