#1F529D#1F529D

#1F529D is a dark, vivid blue. Relative luminance 0.088; OKLCH L 44.8% C 0.134 H 258.4°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#1F529D
RGB	rgb(31, 82, 157)
HSL	hsl(216, 67%, 37%)
HSV	hsv(216, 80%, 62%)
CMYK	cmyk(80.3%, 47.8%, 0%, 38.4%)
CIE-LAB	lab(35.52, 11.33, -45.62)
CIE-LCH	lch(35.52, 47.01, 283.95°)
OKLab	oklab(44.76% -0.0268 -0.131)
OKLCH	oklch(44.76% 0.134 258.4)
XYZ	xyz(9.6659, 8.7591, 33.0730)
Luminance	0.0876 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F529D #9D6A1F

analogous

#1F919D #1F529D #2B1F9D

triadic

#1F529D #9D1F52 #529D1F

tetradic

#1F529D #9D1F91 #9D6A1F #1F9D2B

square

#1F529D #9D1F91 #9D6A1F #1F9D2B

split-complementary

#1F529D #9D2B1F #919D1F

monochromatic

#0B1D37 #15376A #1F529D #296DD0 #588EDE

Accessibility & contrast

On white

7.63

#1F529D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1F529D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F529D

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F529D	#FFFFFF	#000000	##FFFFFF
##1F529D	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295AA0

Deuteranopia (green-blind)

#034E9C

Tritanopia (blue-blind)

#006470

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1f529d;
/* rgb */ color: rgb(31, 82, 157);
/* oklch */ color: oklch(44.8% 0.134 258.4);

Tailwind

colors: {
  custom: {
    50: '#6f82ba',
    500: '#1f529d',
    950: '#000000',
  },
}

SCSS

$custom: #1f529d;
$custom-light: #6f82ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f529d",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 157
  },
  "hsl": {
    "h": 215.714,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.44756,
    "c": 0.13374,
    "h": 258.4
  },
  "luminance": 0.0876
}

Semantic roles & 50–950 ramp

primary

#1F529D

secondary

#C29656

accent

#A43EEA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F529D

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

Preview Lab → · Contrast checker → · Palette generator →