#1F3A67#1F3A67

#1F3A67 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.2% C 0.085 H 260.0°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#1F3A67
RGB	rgb(31, 58, 103)
HSL	hsl(218, 54%, 26%)
HSV	hsv(218, 70%, 40%)
CMYK	cmyk(69.9%, 43.7%, 0%, 59.6%)
CIE-LAB	lab(24.63, 6.10, -29.48)
CIE-LCH	lch(24.63, 30.11, 281.69°)
OKLab	oklab(35.21% -0.0148 -0.084)
OKLCH	oklch(35.21% 0.085 260)
XYZ	xyz(4.5254, 4.2962, 13.4201)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3A67 #674C1F

analogous

#1F5E67 #1F3A67 #281F67

triadic

#1F3A67 #671F3A #3A671F

tetradic

#1F3A67 #671F5E #674C1F #1F6728

square

#1F3A67 #671F5E #674C1F #1F6728

split-complementary

#1F3A67 #67281F #5E671F

monochromatic

#070D18 #112038 #1F3A67 #2D5496 #3C6FC4

Accessibility & contrast

On white

11.29

#1F3A67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F3A67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3A67

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3A67	#FFFFFF	#000000	##FFFFFF
##1F3A67	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253E69

Deuteranopia (green-blind)

#1A3766

Tritanopia (blue-blind)

#00444B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f3a67;
/* rgb */ color: rgb(31, 58, 103);
/* oklch */ color: oklch(35.2% 0.085 260.0);

Tailwind

colors: {
  custom: {
    50: '#636f93',
    500: '#1f3a67',
    950: '#000000',
  },
}

SCSS

$custom: #1f3a67;
$custom-light: #636f93;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3a67",
  "rgb": {
    "r": 31,
    "g": 58,
    "b": 103
  },
  "hsl": {
    "h": 217.5,
    "s": 53.731,
    "l": 26.275
  },
  "oklch": {
    "l": 0.35208,
    "c": 0.08533,
    "h": 260
  },
  "luminance": 0.04297
}

Semantic roles & 50–950 ramp

primary

#1F3A67

secondary

#9B7C46

accent

#A64BDD

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1F3A67

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

Preview Lab → · Contrast checker → · Palette generator →