#1F449B#1F449B

#1F449B is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.5% C 0.149 H 263.7°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F449B
RGB	rgb(31, 68, 155)
HSL	hsl(222, 67%, 36%)
HSV	hsv(222, 80%, 61%)
CMYK	cmyk(80%, 56.1%, 0%, 39.2%)
CIE-LAB	lab(31.33, 20.01, -51.19)
CIE-LCH	lch(31.33, 54.96, 291.35°)
OKLab	oklab(41.51% -0.0162 -0.1477)
OKLCH	oklch(41.51% 0.149 263.7)
XYZ	xyz(8.5465, 6.7911, 31.8644)
Luminance	0.0679 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F449B #9B761F

analogous

#1F829B #1F449B #381F9B

triadic

#1F449B #9B1F44 #449B1F

tetradic

#1F449B #9B1F82 #9B761F #1F9B38

square

#1F449B #9B1F82 #9B761F #1F9B38

split-complementary

#1F449B #9B381F #829B1F

monochromatic

#0B1735 #152E68 #1F449B #295ACE #577FDD

Accessibility & contrast

On white

8.90

#1F449B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1F449B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F449B

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F449B	#FFFFFF	#000000	##FFFFFF
##1F449B	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509E

Deuteranopia (green-blind)

#004499

Tritanopia (blue-blind)

#005A68

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f449b;
/* rgb */ color: rgb(31, 68, 155);
/* oklch */ color: oklch(41.5% 0.149 263.7);

Tailwind

colors: {
  custom: {
    50: '#6f77b9',
    500: '#1f449b',
    950: '#000000',
  },
}

SCSS

$custom: #1f449b;
$custom-light: #6f77b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f449b",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 155
  },
  "hsl": {
    "h": 222.097,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.41513,
    "c": 0.14856,
    "h": 263.7
  },
  "luminance": 0.06792
}

Semantic roles & 50–950 ramp

primary

#1F449B

secondary

#C1A155

accent

#B63EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F449B

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

Preview Lab → · Contrast checker → · Palette generator →