#1F529E#1F529E

#1F529E is a dark, vivid blue. Relative luminance 0.088; OKLCH L 44.8% C 0.135 H 258.6°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F529E
RGB	rgb(31, 82, 158)
HSL	hsl(216, 67%, 37%)
HSV	hsv(216, 80%, 62%)
CMYK	cmyk(80.4%, 48.1%, 0%, 38%)
CIE-LAB	lab(35.58, 11.73, -46.11)
CIE-LCH	lch(35.58, 47.58, 284.27°)
OKLab	oklab(44.83% -0.0266 -0.1325)
OKLCH	oklch(44.83% 0.135 258.6)
XYZ	xyz(9.7517, 8.7934, 33.5245)
Luminance	0.0880 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F529E #9E6B1F

analogous

#1F919E #1F529E #2C1F9E

triadic

#1F529E #9E1F52 #529E1F

tetradic

#1F529E #9E1F91 #9E6B1F #1F9E2C

square

#1F529E #9E1F91 #9E6B1F #1F9E2C

split-complementary

#1F529E #9E2C1F #919E1F

monochromatic

#0B1D38 #15376B #1F529E #296DD1 #598FDE

Accessibility & contrast

On white

7.61

#1F529E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#1F529E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F529E

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F529E	#FFFFFF	#000000	##FFFFFF
##1F529E	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#285AA1

Deuteranopia (green-blind)

#004E9C

Tritanopia (blue-blind)

#006470

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1f529e;
/* rgb */ color: rgb(31, 82, 158);
/* oklch */ color: oklch(44.8% 0.135 258.6);

Tailwind

colors: {
  custom: {
    50: '#6f82bb',
    500: '#1f529e',
    950: '#000000',
  },
}

SCSS

$custom: #1f529e;
$custom-light: #6f82bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f529e",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 158
  },
  "hsl": {
    "h": 215.906,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.44829,
    "c": 0.13513,
    "h": 258.6
  },
  "luminance": 0.08795
}

Semantic roles & 50–950 ramp

primary

#1F529E

secondary

#C29756

accent

#A53EEA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F529E

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

Preview Lab → · Contrast checker → · Palette generator →