#1F39A6#1F39A6

#1F39A6 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.177 H 267.1°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F39A6
RGB	rgb(31, 57, 166)
HSL	hsl(228, 69%, 39%)
HSV	hsv(228, 81%, 65%)
CMYK	cmyk(81.3%, 65.7%, 0%, 34.9%)
CIE-LAB	lab(29.34, 31.71, -61.09)
CIE-LCH	lch(29.34, 68.83, 297.43°)
OKLab	oklab(40.32% -0.0091 -0.1769)
OKLCH	oklch(40.32% 0.177 267.1)
XYZ	xyz(8.9087, 5.9697, 36.7517)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F39A6 #A68C1F

analogous

#1F7CA6 #1F39A6 #481FA6

triadic

#1F39A6 #A61F39 #39A61F

tetradic

#1F39A6 #A61F7C #A68C1F #1FA648

square

#1F39A6 #A61F7C #A68C1F #1FA648

split-complementary

#1F39A6 #A6481F #7CA61F

monochromatic

#0C163F #152772 #1F39A6 #2B4CD7 #5E78E1

Accessibility & contrast

On white

9.57

#1F39A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F39A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F39A6

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F39A6	#FFFFFF	#000000	##FFFFFF
##1F39A6	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA9

Deuteranopia (green-blind)

#003FA4

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f39a6;
/* rgb */ color: rgb(31, 57, 166);
/* oklch */ color: oklch(40.3% 0.177 267.1);

Tailwind

colors: {
  custom: {
    50: '#736fc1',
    500: '#1f39a6',
    950: '#000000',
  },
}

SCSS

$custom: #1f39a6;
$custom-light: #736fc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f39a6",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 166
  },
  "hsl": {
    "h": 228.444,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.4032,
    "c": 0.1771,
    "h": 267.1
  },
  "luminance": 0.05971
}

Semantic roles & 50–950 ramp

primary

#1F39A6

secondary

#C5B15B

accent

#CA3CEB

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #1F39A6

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

Preview Lab → · Contrast checker → · Palette generator →