#1F499F#1F499F

#1F499F is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.9% C 0.148 H 262.4°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F499F
RGB	rgb(31, 73, 159)
HSL	hsl(220, 67%, 37%)
HSV	hsv(220, 81%, 62%)
CMYK	cmyk(80.5%, 54.1%, 0%, 37.6%)
CIE-LAB	lab(33.05, 18.20, -50.82)
CIE-LCH	lch(33.05, 53.97, 289.70°)
OKLab	oklab(42.91% -0.0195 -0.1465)
OKLCH	oklch(42.91% 0.148 262.4)
XYZ	xyz(9.2034, 7.5585, 33.7680)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F499F #9F751F

analogous

#1F899F #1F499F #351F9F

triadic

#1F499F #9F1F49 #499F1F

tetradic

#1F499F #9F1F89 #9F751F #1F9F35

square

#1F499F #9F1F89 #9F751F #1F9F35

split-complementary

#1F499F #9F351F #899F1F

monochromatic

#0B1A39 #15316C #1F499F #2961D2 #5A85DF

Accessibility & contrast

On white

8.36

#1F499F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1F499F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F499F

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F499F	#FFFFFF	#000000	##FFFFFF
##1F499F	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0454A2

Deuteranopia (green-blind)

#00489D

Tritanopia (blue-blind)

#005E6D

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f499f;
/* rgb */ color: rgb(31, 73, 159);
/* oklch */ color: oklch(42.9% 0.148 262.4);

Tailwind

colors: {
  custom: {
    50: '#707bbc',
    500: '#1f499f',
    950: '#000000',
  },
}

SCSS

$custom: #1f499f;
$custom-light: #707bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f499f",
  "rgb": {
    "r": 31,
    "g": 73,
    "b": 159
  },
  "hsl": {
    "h": 220.313,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.42912,
    "c": 0.14779,
    "h": 262.4
  },
  "luminance": 0.0756
}

Semantic roles & 50–950 ramp

primary

#1F499F

secondary

#C39F57

accent

#B23EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F499F

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

Preview Lab → · Contrast checker → · Palette generator →