#1F5A8B#1F5A8B

#1F5A8B is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.5% C 0.100 H 247.5°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#1F5A8B
RGB	rgb(31, 90, 139)
HSL	hsl(207, 64%, 33%)
HSV	hsv(207, 78%, 55%)
CMYK	cmyk(77.7%, 35.3%, 0%, 45.5%)
CIE-LAB	lab(36.87, -1.00, -32.58)
CIE-LCH	lch(36.87, 32.59, 268.24°)
OKLab	oklab(45.46% -0.0383 -0.0926)
OKLCH	oklch(45.46% 0.1 247.5)
XYZ	xyz(8.8797, 9.4667, 25.7804)
Luminance	0.0947 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5A8B #8B501F

analogous

#1F8B86 #1F5A8B #1F248B

triadic

#1F5A8B #8B1F5A #5A8B1F

tetradic

#1F5A8B #861F8B #8B501F #248B1F

square

#1F5A8B #861F8B #8B501F #248B1F

split-complementary

#1F5A8B #8B1F24 #8B861F

monochromatic

#091927 #143A59 #1F5A8B #2A7ABD #4D99D7

Accessibility & contrast

On white

7.26

#1F5A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#1F5A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5A8B

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5A8B	#FFFFFF	#000000	##FFFFFF
##1F5A8B	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#435C8D

Deuteranopia (green-blind)

#34528A

Tritanopia (blue-blind)

#00666C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f5a8b;
/* rgb */ color: rgb(31, 90, 139);
/* oklch */ color: oklch(45.5% 0.100 247.5);

Tailwind

colors: {
  custom: {
    50: '#6b88ad',
    500: '#1f5a8b',
    950: '#000000',
  },
}

SCSS

$custom: #1f5a8b;
$custom-light: #6b88ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5a8b",
  "rgb": {
    "r": 31,
    "g": 90,
    "b": 139
  },
  "hsl": {
    "h": 207.222,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.45455,
    "c": 0.1002,
    "h": 247.5
  },
  "luminance": 0.09468
}

Semantic roles & 50–950 ramp

primary

#1F5A8B

secondary

#BA7E4C

accent

#8C41E7

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1F5A8B

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

Preview Lab → · Contrast checker → · Palette generator →