#1F279A#1F279A

#1F279A is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.0% C 0.182 H 270.1°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F279A
RGB	rgb(31, 39, 154)
HSL	hsl(236, 66%, 36%)
HSV	hsv(236, 80%, 60%)
CMYK	cmyk(79.9%, 74.7%, 0%, 39.6%)
CIE-LAB	lab(23.92, 38.73, -62.72)
CIE-LCH	lch(23.92, 73.71, 301.70°)
OKLab	oklab(36.03% 0.0004 -0.1816)
OKLCH	oklch(36.03% 0.182 270.1)
XYZ	xyz(7.1213, 4.0746, 30.9767)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F279A #9A921F

analogous

#1F659A #1F279A #551F9A

triadic

#1F279A #9A1F27 #279A1F

tetradic

#1F279A #9A1F65 #9A921F #1F9A55

square

#1F279A #9A1F65 #9A921F #1F9A55

split-complementary

#1F279A #9A551F #659A1F

monochromatic

#0A0D34 #151A67 #1F279A #2934CD #565FDD

Accessibility & contrast

On white

11.57

#1F279A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1F279A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F279A

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F279A	#FFFFFF	#000000	##FFFFFF
##1F279A	1.00	11.57	1.82	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9D

Deuteranopia (green-blind)

#003398

Tritanopia (blue-blind)

#00485E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f279a;
/* rgb */ color: rgb(31, 39, 154);
/* oklch */ color: oklch(36.0% 0.182 270.1);

Tailwind

colors: {
  custom: {
    50: '#7262b9',
    500: '#1f279a',
    950: '#000000',
  },
}

SCSS

$custom: #1f279a;
$custom-light: #7262b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f279a",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 154
  },
  "hsl": {
    "h": 236.098,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.3603,
    "c": 0.18165,
    "h": 270.1
  },
  "luminance": 0.04075
}

Semantic roles & 50–950 ramp

primary

#1F279A

secondary

#C1BA54

accent

#DE3EE9

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1F279A

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

Preview Lab → · Contrast checker → · Palette generator →