#1F618B#1F618B

#1F618B is a mid, moderate cyan. Relative luminance 0.107; OKLCH L 47.2% C 0.094 H 241.2°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F618B
RGB	rgb(31, 97, 139)
HSL	hsl(203, 64%, 33%)
HSV	hsv(203, 78%, 55%)
CMYK	cmyk(77.7%, 30.2%, 0%, 45.5%)
CIE-LAB	lab(39.08, -5.37, -29.10)
CIE-LCH	lch(39.08, 29.59, 259.54°)
OKLab	oklab(47.2% -0.0453 -0.0823)
OKLCH	oklch(47.2% 0.094 241.2)
XYZ	xyz(9.4981, 10.7037, 25.9865)
Luminance	0.1071 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F618B #8B491F

analogous

#1F8B7F #1F618B #1F2B8B

triadic

#1F618B #8B1F61 #618B1F

tetradic

#1F618B #7F1F8B #8B491F #2B8B1F

square

#1F618B #7F1F8B #8B491F #2B8B1F

split-complementary

#1F618B #8B1F2B #8B7F1F

monochromatic

#091B27 #143E59 #1F618B #2A84BD #4DA2D7

Accessibility & contrast

On white

6.69

#1F618B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#1F618B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F618B

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F618B	#FFFFFF	#000000	##FFFFFF
##1F618B	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D628D

Deuteranopia (green-blind)

#3F588A

Tritanopia (blue-blind)

#006B70

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1f618b;
/* rgb */ color: rgb(31, 97, 139);
/* oklch */ color: oklch(47.2% 0.094 241.2);

Tailwind

colors: {
  custom: {
    50: '#6b8dad',
    500: '#1f618b',
    950: '#000000',
  },
}

SCSS

$custom: #1f618b;
$custom-light: #6b8dad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f618b",
  "rgb": {
    "r": 31,
    "g": 97,
    "b": 139
  },
  "hsl": {
    "h": 203.333,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.47199,
    "c": 0.09396,
    "h": 241.2
  },
  "luminance": 0.10705
}

Semantic roles & 50–950 ramp

primary

#1F618B

secondary

#BA774C

accent

#8241E7

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1F618B

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

Preview Lab → · Contrast checker → · Palette generator →