#1F279F#1F279F

#1F279F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.6% C 0.188 H 269.9°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F279F
RGB	rgb(31, 39, 159)
HSL	hsl(236, 67%, 37%)
HSV	hsv(236, 81%, 62%)
CMYK	cmyk(80.5%, 75.5%, 0%, 37.6%)
CIE-LAB	lab(24.46, 40.49, -64.87)
CIE-LCH	lch(24.46, 76.47, 301.97°)
OKLab	oklab(36.58% -0.0004 -0.1879)
OKLCH	oklch(36.58% 0.188 269.9)
XYZ	xyz(7.5465, 4.2447, 33.2157)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F279F #9F971F

analogous

#1F679F #1F279F #571F9F

triadic

#1F279F #9F1F27 #279F1F

tetradic

#1F279F #9F1F67 #9F971F #1F9F57

square

#1F279F #9F1F67 #9F971F #1F9F57

split-complementary

#1F279F #9F571F #679F1F

monochromatic

#0B0E39 #151A6C #1F279F #2934D2 #5A62DF

Accessibility & contrast

On white

11.36

#1F279F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1F279F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F279F

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F279F	#FFFFFF	#000000	##FFFFFF
##1F279F	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A2

Deuteranopia (green-blind)

#00349D

Tritanopia (blue-blind)

#004A61

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f279f;
/* rgb */ color: rgb(31, 39, 159);
/* oklch */ color: oklch(36.6% 0.188 269.9);

Tailwind

colors: {
  custom: {
    50: '#7362bd',
    500: '#1f279f',
    950: '#000000',
  },
}

SCSS

$custom: #1f279f;
$custom-light: #7362bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f279f",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 159
  },
  "hsl": {
    "h": 236.25,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36582,
    "c": 0.1879,
    "h": 269.9
  },
  "luminance": 0.04246
}

Semantic roles & 50–950 ramp

primary

#1F279F

secondary

#C3BC57

accent

#DF3EEA

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1F279F

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

Preview Lab → · Contrast checker → · Palette generator →