#301F8E#301F8E

#301F8E is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.7% C 0.170 H 279.7°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#301F8E
RGB	rgb(48, 31, 142)
HSL	hsl(249, 64%, 34%)
HSV	hsv(249, 78%, 56%)
CMYK	cmyk(66.2%, 78.2%, 0%, 44.3%)
CIE-LAB	lab(22.16, 40.91, -58.16)
CIE-LCH	lch(22.16, 71.11, 305.12°)
OKLab	oklab(34.71% 0.0287 -0.1679)
OKLCH	oklch(34.71% 0.17 279.7)
XYZ	xyz(6.5898, 3.5608, 25.9260)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#301F8E #7D8E1F

analogous

#1F468E #301F8E #681F8E

triadic

#301F8E #8E301F #1F8E30

tetradic

#301F8E #8E1F46 #7D8E1F #1F8E68

square

#301F8E #8E1F46 #7D8E1F #1F8E68

split-complementary

#301F8E #8E681F #468E1F

monochromatic

#0E092A #1F145C #301F8E #412AC0 #644FD9

Accessibility & contrast

On white

12.26

#301F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#301F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #301F8E

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##301F8E	#FFFFFF	#000000	##FFFFFF
##301F8E	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003991

Deuteranopia (green-blind)

#00318C

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #301f8e;
/* rgb */ color: rgb(48, 31, 142);
/* oklch */ color: oklch(34.7% 0.170 279.7);

Tailwind

colors: {
  custom: {
    50: '#765eb0',
    500: '#301f8e',
    950: '#000000',
  },
}

SCSS

$custom: #301f8e;
$custom-light: #765eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#301f8e",
  "rgb": {
    "r": 48,
    "g": 31,
    "b": 142
  },
  "hsl": {
    "h": 249.189,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.34705,
    "c": 0.17035,
    "h": 279.7
  },
  "luminance": 0.03561
}

Semantic roles & 50–950 ramp

primary

#301F8E

secondary

#ABBB4D

accent

#E741CE

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #301F8E

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

Preview Lab → · Contrast checker → · Palette generator →