#1F39A7#1F39A7

#1F39A7 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.4% C 0.178 H 267.1°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F39A7
RGB	rgb(31, 57, 167)
HSL	hsl(229, 69%, 39%)
HSV	hsv(229, 81%, 65%)
CMYK	cmyk(81.4%, 65.9%, 0%, 34.5%)
CIE-LAB	lab(29.43, 32.09, -61.54)
CIE-LCH	lch(29.43, 69.40, 297.54°)
OKLab	oklab(40.42% -0.0091 -0.1782)
OKLCH	oklch(40.42% 0.178 267.1)
XYZ	xyz(9.0008, 6.0065, 37.2367)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F39A7 #A78D1F

analogous

#1F7DA7 #1F39A7 #491FA7

triadic

#1F39A7 #A71F39 #39A71F

tetradic

#1F39A7 #A71F7D #A78D1F #1FA749

square

#1F39A7 #A71F7D #A78D1F #1FA749

split-complementary

#1F39A7 #A7491F #7DA71F

monochromatic

#0C1640 #152773 #1F39A7 #2B4CD8 #5F78E1

Accessibility & contrast

On white

9.54

#1F39A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1F39A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F39A7

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F39A7	#FFFFFF	#000000	##FFFFFF
##1F39A7	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAA

Deuteranopia (green-blind)

#003FA5

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f39a7;
/* rgb */ color: rgb(31, 57, 167);
/* oklch */ color: oklch(40.4% 0.178 267.1);

Tailwind

colors: {
  custom: {
    50: '#736fc2',
    500: '#1f39a7',
    950: '#000000',
  },
}

SCSS

$custom: #1f39a7;
$custom-light: #736fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f39a7",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 167
  },
  "hsl": {
    "h": 228.529,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40417,
    "c": 0.17842,
    "h": 267.1
  },
  "luminance": 0.06008
}

Semantic roles & 50–950 ramp

primary

#1F39A7

secondary

#C6B25C

accent

#CA3CEC

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1F39A7

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

Preview Lab → · Contrast checker → · Palette generator →