#1F529A#1F529A

#1F529A is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.5% C 0.130 H 257.8°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F529A
RGB	rgb(31, 82, 154)
HSL	hsl(215, 66%, 36%)
HSV	hsv(215, 80%, 60%)
CMYK	cmyk(79.9%, 46.8%, 0%, 39.6%)
CIE-LAB	lab(35.32, 10.14, -44.13)
CIE-LCH	lch(35.32, 45.28, 282.93°)
OKLab	oklab(44.54% -0.0273 -0.1267)
OKLCH	oklch(44.54% 0.13 257.8)
XYZ	xyz(9.4130, 8.6579, 31.7406)
Luminance	0.0866 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F529A #9A671F

analogous

#1F909A #1F529A #2A1F9A

triadic

#1F529A #9A1F52 #529A1F

tetradic

#1F529A #9A1F90 #9A671F #1F9A2A

square

#1F529A #9A1F90 #9A671F #1F9A2A

split-complementary

#1F529A #9A2A1F #909A1F

monochromatic

#0A1C34 #153767 #1F529A #296DCD #568EDD

Accessibility & contrast

On white

7.69

#1F529A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#1F529A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F529A

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F529A	#FFFFFF	#000000	##FFFFFF
##1F529A	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C599D

Deuteranopia (green-blind)

#0D4E99

Tritanopia (blue-blind)

#00636E

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f529a;
/* rgb */ color: rgb(31, 82, 154);
/* oklch */ color: oklch(44.5% 0.130 257.8);

Tailwind

colors: {
  custom: {
    50: '#6e82b8',
    500: '#1f529a',
    950: '#000000',
  },
}

SCSS

$custom: #1f529a;
$custom-light: #6e82b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f529a",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 154
  },
  "hsl": {
    "h": 215.122,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.44539,
    "c": 0.12958,
    "h": 257.8
  },
  "luminance": 0.08659
}

Semantic roles & 50–950 ramp

primary

#1F529A

secondary

#C19454

accent

#A23EE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F529A

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

Preview Lab → · Contrast checker → · Palette generator →