#1F4E63#1F4E63

#1F4E63 is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.1% C 0.062 H 230.3°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E63
RGB	rgb(31, 78, 99)
HSL	hsl(199, 52%, 25%)
HSV	hsv(199, 69%, 39%)
CMYK	cmyk(68.7%, 21.2%, 0%, 61.2%)
CIE-LAB	lab(30.97, -8.60, -16.96)
CIE-LCH	lch(30.97, 19.02, 243.11°)
OKLab	oklab(40.13% -0.0394 -0.0475)
OKLCH	oklch(40.13% 0.062 230.3)
XYZ	xyz(5.5407, 6.6404, 12.7917)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E63 #63341F

analogous

#1F6356 #1F4E63 #1F2C63

triadic

#1F4E63 #631F4E #4E631F

tetradic

#1F4E63 #561F63 #63341F #2C631F

square

#1F4E63 #561F63 #63341F #2C631F

split-complementary

#1F4E63 #631F2C #63561F

monochromatic

#071217 #102934 #1F4E63 #2E7392 #3C97C0

Accessibility & contrast

On white

9.02

#1F4E63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1F4E63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E63

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E63	#FFFFFF	#000000	##FFFFFF
##1F4E63	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434D64

Deuteranopia (green-blind)

#3A4663

Tritanopia (blue-blind)

#005455

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f4e63;
/* rgb */ color: rgb(31, 78, 99);
/* oklch */ color: oklch(40.1% 0.062 230.3);

Tailwind

colors: {
  custom: {
    50: '#637f8f',
    500: '#1f4e63',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e63;
$custom-light: #637f8f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e63",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 99
  },
  "hsl": {
    "h": 198.529,
    "s": 52.308,
    "l": 25.49
  },
  "oklch": {
    "l": 0.4013,
    "c": 0.06166,
    "h": 230.3
  },
  "luminance": 0.06641
}

Semantic roles & 50–950 ramp

primary

#1F4E63

secondary

#985F46

accent

#784CDC

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#060A0C

muted

#7A7C7D

Preview Lab

Preview with #1F4E63

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

Preview Lab → · Contrast checker → · Palette generator →