#1F5F8B#1F5F8B

#1F5F8B is a mid, moderate cyan. Relative luminance 0.103; OKLCH L 46.7% C 0.096 H 243.1°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F5F8B
RGB	rgb(31, 95, 139)
HSL	hsl(204, 64%, 33%)
HSV	hsv(204, 78%, 55%)
CMYK	cmyk(77.7%, 31.7%, 0%, 45.5%)
CIE-LAB	lab(38.44, -4.14, -30.09)
CIE-LCH	lch(38.44, 30.38, 262.17°)
OKLab	oklab(46.7% -0.0433 -0.0853)
OKLCH	oklch(46.7% 0.096 243.1)
XYZ	xyz(9.3157, 10.3387, 25.9257)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5F8B #8B4B1F

analogous

#1F8B81 #1F5F8B #1F298B

triadic

#1F5F8B #8B1F5F #5F8B1F

tetradic

#1F5F8B #811F8B #8B4B1F #298B1F

square

#1F5F8B #811F8B #8B4B1F #298B1F

split-complementary

#1F5F8B #8B1F29 #8B811F

monochromatic

#091B27 #143D59 #1F5F8B #2A81BD #4D9FD7

Accessibility & contrast

On white

6.84

#1F5F8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#1F5F8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5F8B

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5F8B	#FFFFFF	#000000	##FFFFFF
##1F5F8B	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B608D

Deuteranopia (green-blind)

#3C568A

Tritanopia (blue-blind)

#006A6F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1f5f8b;
/* rgb */ color: rgb(31, 95, 139);
/* oklch */ color: oklch(46.7% 0.096 243.1);

Tailwind

colors: {
  custom: {
    50: '#6b8cad',
    500: '#1f5f8b',
    950: '#000000',
  },
}

SCSS

$custom: #1f5f8b;
$custom-light: #6b8cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5f8b",
  "rgb": {
    "r": 31,
    "g": 95,
    "b": 139
  },
  "hsl": {
    "h": 204.444,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.46698,
    "c": 0.09562,
    "h": 243.1
  },
  "luminance": 0.1034
}

Semantic roles & 50–950 ramp

primary

#1F5F8B

secondary

#BA794C

accent

#8541E7

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1F5F8B

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

Preview Lab → · Contrast checker → · Palette generator →