#1F4B89#1F4B89

#1F4B89 is a dark, moderate blue. Relative luminance 0.071; OKLCH L 41.7% C 0.114 H 257.6°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F4B89
RGB	rgb(31, 75, 137)
HSL	hsl(215, 63%, 33%)
HSV	hsv(215, 77%, 54%)
CMYK	cmyk(77.4%, 45.3%, 0%, 46.3%)
CIE-LAB	lab(32.10, 8.04, -38.95)
CIE-LCH	lch(32.10, 39.77, 281.66°)
OKLab	oklab(41.69% -0.0245 -0.1115)
OKLCH	oklch(41.69% 0.114 257.6)
XYZ	xyz(7.5949, 7.1287, 24.6378)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4B89 #895D1F

analogous

#1F8089 #1F4B89 #281F89

triadic

#1F4B89 #891F4B #4B891F

tetradic

#1F4B89 #891F80 #895D1F #1F8928

square

#1F4B89 #891F80 #895D1F #1F8928

split-complementary

#1F4B89 #89281F #80891F

monochromatic

#081425 #143057 #1F4B89 #2A66BB #4C85D6

Accessibility & contrast

On white

8.66

#1F4B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1F4B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4B89

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4B89	#FFFFFF	#000000	##FFFFFF
##1F4B89	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C518B

Deuteranopia (green-blind)

#174788

Tritanopia (blue-blind)

#005A63

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4b89;
/* rgb */ color: rgb(31, 75, 137);
/* oklch */ color: oklch(41.7% 0.114 257.6);

Tailwind

colors: {
  custom: {
    50: '#6b7cac',
    500: '#1f4b89',
    950: '#000000',
  },
}

SCSS

$custom: #1f4b89;
$custom-light: #6b7cac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4b89",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 137
  },
  "hsl": {
    "h": 215.094,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.41694,
    "c": 0.1142,
    "h": 257.6
  },
  "luminance": 0.0713
}

Semantic roles & 50–950 ramp

primary

#1F4B89

secondary

#B98B4B

accent

#A242E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1F4B89

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

Preview Lab → · Contrast checker → · Palette generator →