#1F4397#1F4397

#1F4397 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.0% C 0.144 H 263.7°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F4397
RGB	rgb(31, 67, 151)
HSL	hsl(222, 66%, 36%)
HSV	hsv(222, 79%, 59%)
CMYK	cmyk(79.5%, 55.6%, 0%, 40.8%)
CIE-LAB	lab(30.73, 19.10, -49.72)
CIE-LCH	lch(30.73, 53.26, 291.02°)
OKLab	oklab(40.97% -0.0158 -0.1434)
OKLCH	oklch(40.97% 0.144 263.7)
XYZ	xyz(8.1562, 6.5390, 30.1045)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4397 #97731F

analogous

#1F7F97 #1F4397 #371F97

triadic

#1F4397 #971F43 #43971F

tetradic

#1F4397 #971F7F #97731F #1F9737

square

#1F4397 #971F7F #97731F #1F9737

split-complementary

#1F4397 #97371F #7F971F

monochromatic

#0A1631 #152C64 #1F4397 #295ACA #547DDC

Accessibility & contrast

On white

9.10

#1F4397 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1F4397 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4397

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4397	#FFFFFF	#000000	##FFFFFF
##1F4397	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9A

Deuteranopia (green-blind)

#004395

Tritanopia (blue-blind)

#005866

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4397;
/* rgb */ color: rgb(31, 67, 151);
/* oklch */ color: oklch(41.0% 0.144 263.7);

Tailwind

colors: {
  custom: {
    50: '#6e76b6',
    500: '#1f4397',
    950: '#000000',
  },
}

SCSS

$custom: #1f4397;
$custom-light: #6e76b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4397",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 151
  },
  "hsl": {
    "h": 222,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40967,
    "c": 0.14425,
    "h": 263.7
  },
  "luminance": 0.0654
}

Semantic roles & 50–950 ramp

primary

#1F4397

secondary

#BF9F52

accent

#B63FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4397

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

Preview Lab → · Contrast checker → · Palette generator →