#1F648B#1F648B

#1F648B is a mid, moderate cyan. Relative luminance 0.113; OKLCH L 48.0% C 0.092 H 238.2°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX#1F648B
RGBrgb(31, 100, 139)
HSLhsl(202, 64%, 33%)
HSVhsv(202, 78%, 55%)
CMYKcmyk(77.7%, 28.1%, 0%, 45.5%)
CIE-LABlab(40.03, -7.20, -27.61)
CIE-LCHlch(40.03, 28.53, 255.38°)
OKLaboklab(47.96% -0.0483 -0.078)
OKLCHoklch(47.96% 0.092 238.2)
XYZxyz(9.7806, 11.2686, 26.0807)
Luminance0.1127 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1F648B #8B461F
analogous
#1F8B7C #1F648B #1F2E8B
triadic
#1F648B #8B1F64 #648B1F
tetradic
#1F648B #7C1F8B #8B461F #2E8B1F
square
#1F648B #7C1F8B #8B461F #2E8B1F
split-complementary
#1F648B #8B1F2E #8B7C1F
monochromatic
#091C27 #144059 #1F648B #2A88BD #4DA5D7

Accessibility & contrast

On white

6.45
#1F648B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.25
#1F648B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F648B
6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1F648B#FFFFFF#000000##FFFFFF
##1F648B1.006.453.256.45
#FFFFFF6.451.0021.001.00
#0000003.2521.001.0021.00
##FFFFFF6.451.0021.001.00

Color blindness preview

Protanopia (red-blind)
#52648D
Deuteranopia (green-blind)
#435A8A
Tritanopia (blue-blind)
#006E71
Achromatopsia (no color)
#5E5E5E

Design tokens & code

CSS
--color: #1f648b;
/* rgb */ color: rgb(31, 100, 139);
/* oklch */ color: oklch(48.0% 0.092 238.2);
Tailwind
colors: {
  custom: {
    50: '#6b90ad',
    500: '#1f648b',
    950: '#000000',
  },
}
SCSS
$custom: #1f648b;
$custom-light: #6b90ad;
$custom-dark: #000000;
JSON
{
  "hex": "#1f648b",
  "rgb": {
    "r": 31,
    "g": 100,
    "b": 139
  },
  "hsl": {
    "h": 201.667,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.47955,
    "c": 0.09171,
    "h": 238.2
  },
  "luminance": 0.1127
}

Semantic roles & 50–950 ramp

primary
#1F648B
secondary
#BA744C
accent
#7D41E7
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#080C10
muted
#7A7D7F

Preview Lab

Preview with #1F648B

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

Preview Lab → · Contrast checker → · Palette generator →

#1F648B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva