#1F449F#1F449F

#1F449F is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.9% C 0.154 H 264.1°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#1F449F
RGB	rgb(31, 68, 159)
HSL	hsl(223, 67%, 37%)
HSV	hsv(223, 81%, 62%)
CMYK	cmyk(80.5%, 57.2%, 0%, 37.6%)
CIE-LAB	lab(31.64, 21.59, -53.10)
CIE-LCH	lch(31.64, 57.32, 292.13°)
OKLab	oklab(41.85% -0.0159 -0.1533)
OKLCH	oklch(41.85% 0.154 264.1)
XYZ	xyz(8.8880, 6.9277, 33.6629)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F449F #9F7A1F

analogous

#1F849F #1F449F #3A1F9F

triadic

#1F449F #9F1F44 #449F1F

tetradic

#1F449F #9F1F84 #9F7A1F #1F9F3A

square

#1F449F #9F1F84 #9F7A1F #1F9F3A

split-complementary

#1F449F #9F3A1F #849F1F

monochromatic

#0B1839 #152E6C #1F449F #295AD2 #5A80DF

Accessibility & contrast

On white

8.80

#1F449F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1F449F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F449F

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F449F	#FFFFFF	#000000	##FFFFFF
##1F449F	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A2

Deuteranopia (green-blind)

#00459D

Tritanopia (blue-blind)

#005B6A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f449f;
/* rgb */ color: rgb(31, 68, 159);
/* oklch */ color: oklch(41.9% 0.154 264.1);

Tailwind

colors: {
  custom: {
    50: '#7077bc',
    500: '#1f449f',
    950: '#000000',
  },
}

SCSS

$custom: #1f449f;
$custom-light: #7077bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f449f",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 159
  },
  "hsl": {
    "h": 222.656,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.4185,
    "c": 0.15411,
    "h": 264.1
  },
  "luminance": 0.06929
}

Semantic roles & 50–950 ramp

primary

#1F449F

secondary

#C3A457

accent

#B83EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F449F

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

Preview Lab → · Contrast checker → · Palette generator →