#1F4E89#1F4E89

#1F4E89 is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.4% C 0.111 H 255.7°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E89
RGB	rgb(31, 78, 137)
HSL	hsl(213, 63%, 33%)
HSV	hsv(213, 77%, 54%)
CMYK	cmyk(77.4%, 43.1%, 0%, 46.3%)
CIE-LAB	lab(33.02, 6.03, -37.48)
CIE-LCH	lch(33.02, 37.96, 279.14°)
OKLab	oklab(42.41% -0.0273 -0.1072)
OKLCH	oklch(42.41% 0.111 255.7)
XYZ	xyz(7.8032, 7.5453, 24.7072)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E89 #895A1F

analogous

#1F8389 #1F4E89 #251F89

triadic

#1F4E89 #891F4E #4E891F

tetradic

#1F4E89 #891F83 #895A1F #1F8925

square

#1F4E89 #891F83 #895A1F #1F8925

split-complementary

#1F4E89 #89251F #83891F

monochromatic

#081525 #143257 #1F4E89 #2A6ABB #4C89D6

Accessibility & contrast

On white

8.37

#1F4E89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1F4E89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E89

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E89	#FFFFFF	#000000	##FFFFFF
##1F4E89	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31538B

Deuteranopia (green-blind)

#1F4988

Tritanopia (blue-blind)

#005C64

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4e89;
/* rgb */ color: rgb(31, 78, 137);
/* oklch */ color: oklch(42.4% 0.111 255.7);

Tailwind

colors: {
  custom: {
    50: '#6b7fac',
    500: '#1f4e89',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e89;
$custom-light: #6b7fac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e89",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 137
  },
  "hsl": {
    "h": 213.396,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42407,
    "c": 0.11058,
    "h": 255.7
  },
  "luminance": 0.07546
}

Semantic roles & 50–950 ramp

primary

#1F4E89

secondary

#B9884B

accent

#9D42E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F4E89

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

Preview Lab → · Contrast checker → · Palette generator →