#1F5B8B#1F5B8B

#1F5B8B is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.7% C 0.099 H 246.7°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F5B8B
RGB	rgb(31, 91, 139)
HSL	hsl(207, 64%, 33%)
HSV	hsv(207, 78%, 55%)
CMYK	cmyk(77.7%, 34.5%, 0%, 45.5%)
CIE-LAB	lab(37.18, -1.64, -32.08)
CIE-LCH	lch(37.18, 32.12, 267.08°)
OKLab	oklab(45.7% -0.0393 -0.0911)
OKLCH	oklch(45.7% 0.099 246.7)
XYZ	xyz(8.9646, 9.6365, 25.8087)
Luminance	0.0964 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5B8B #8B4F1F

analogous

#1F8B85 #1F5B8B #1F258B

triadic

#1F5B8B #8B1F5B #5B8B1F

tetradic

#1F5B8B #851F8B #8B4F1F #258B1F

square

#1F5B8B #851F8B #8B4F1F #258B1F

split-complementary

#1F5B8B #8B1F25 #8B851F

monochromatic

#091927 #143A59 #1F5B8B #2A7CBD #4D9AD7

Accessibility & contrast

On white

7.17

#1F5B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#1F5B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5B8B

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5B8B	#FFFFFF	#000000	##FFFFFF
##1F5B8B	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455D8D

Deuteranopia (green-blind)

#35538A

Tritanopia (blue-blind)

#00676C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f5b8b;
/* rgb */ color: rgb(31, 91, 139);
/* oklch */ color: oklch(45.7% 0.099 246.7);

Tailwind

colors: {
  custom: {
    50: '#6b89ad',
    500: '#1f5b8b',
    950: '#000000',
  },
}

SCSS

$custom: #1f5b8b;
$custom-light: #6b89ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5b8b",
  "rgb": {
    "r": 31,
    "g": 91,
    "b": 139
  },
  "hsl": {
    "h": 206.667,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.45703,
    "c": 0.09924,
    "h": 246.7
  },
  "luminance": 0.09638
}

Semantic roles & 50–950 ramp

primary

#1F5B8B

secondary

#BA7D4C

accent

#8B41E7

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1F5B8B

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

Preview Lab → · Contrast checker → · Palette generator →