#1F396B#1F396B

#1F396B is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.3% C 0.093 H 262.1°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F396B
RGB	rgb(31, 57, 107)
HSL	hsl(219, 55%, 27%)
HSV	hsv(219, 71%, 42%)
CMYK	cmyk(71%, 46.7%, 0%, 58%)
CIE-LAB	lab(24.57, 8.40, -32.15)
CIE-LCH	lch(24.57, 33.23, 284.64°)
OKLab	oklab(35.25% -0.0128 -0.0919)
OKLCH	oklch(35.25% 0.093 262.1)
XYZ	xyz(4.6811, 4.2786, 14.4862)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F396B #6B511F

analogous

#1F5F6B #1F396B #2B1F6B

triadic

#1F396B #6B1F39 #396B1F

tetradic

#1F396B #6B1F5F #6B511F #1F6B2B

square

#1F396B #6B1F5F #6B511F #1F6B2B

split-complementary

#1F396B #6B2B1F #5F6B1F

monochromatic

#070D18 #11203C #1F396B #2D529A #3D6CC7

Accessibility & contrast

On white

11.32

#1F396B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F396B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F396B

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F396B	#FFFFFF	#000000	##FFFFFF
##1F396B	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#213E6D

Deuteranopia (green-blind)

#13376A

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f396b;
/* rgb */ color: rgb(31, 57, 107);
/* oklch */ color: oklch(35.3% 0.093 262.1);

Tailwind

colors: {
  custom: {
    50: '#646e96',
    500: '#1f396b',
    950: '#000000',
  },
}

SCSS

$custom: #1f396b;
$custom-light: #646e96;
$custom-dark: #000000;

JSON

{
  "hex": "#1f396b",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 107
  },
  "hsl": {
    "h": 219.474,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.3525,
    "c": 0.09277,
    "h": 262.1
  },
  "luminance": 0.04279
}

Semantic roles & 50–950 ramp

primary

#1F396B

secondary

#9F8147

accent

#AB49DE

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1F396B

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

Preview Lab → · Contrast checker → · Palette generator →