#1F3E89#1F3E89

#1F3E89 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.131 H 264.2°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E89
RGB	rgb(31, 62, 137)
HSL	hsl(222, 63%, 33%)
HSV	hsv(222, 77%, 54%)
CMYK	cmyk(77.4%, 54.7%, 0%, 46.3%)
CIE-LAB	lab(28.23, 16.95, -45.18)
CIE-LCH	lch(28.23, 48.26, 290.57°)
OKLab	oklab(38.73% -0.0132 -0.1301)
OKLCH	oklch(38.73% 0.131 264.2)
XYZ	xyz(6.8015, 5.5419, 24.3733)
Luminance	0.0554 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E89 #896A1F

analogous

#1F7389 #1F3E89 #351F89

triadic

#1F3E89 #891F3E #3E891F

tetradic

#1F3E89 #891F73 #896A1F #1F8935

square

#1F3E89 #891F73 #896A1F #1F8935

split-complementary

#1F3E89 #89351F #73891F

monochromatic

#081125 #142757 #1F3E89 #2A55BB #4C74D6

Accessibility & contrast

On white

9.96

#1F3E89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1F3E89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E89

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E89	#FFFFFF	#000000	##FFFFFF
##1F3E89	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05488C

Deuteranopia (green-blind)

#003E88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f3e89;
/* rgb */ color: rgb(31, 62, 137);
/* oklch */ color: oklch(38.7% 0.131 264.2);

Tailwind

colors: {
  custom: {
    50: '#6b72ac',
    500: '#1f3e89',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e89;
$custom-light: #6b72ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e89",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 137
  },
  "hsl": {
    "h": 222.453,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.38728,
    "c": 0.1308,
    "h": 264.2
  },
  "luminance": 0.05543
}

Semantic roles & 50–950 ramp

primary

#1F3E89

secondary

#B9994B

accent

#B642E6

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1F3E89

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

Preview Lab → · Contrast checker → · Palette generator →