#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
RGB	rgb(31, 100, 139)
HSL	hsl(202, 64%, 33%)
HSV	hsv(202, 78%, 55%)
CMYK	cmyk(77.7%, 28.1%, 0%, 45.5%)
CIE-LAB	lab(40.03, -7.20, -27.61)
CIE-LCH	lch(40.03, 28.53, 255.38°)
OKLab	oklab(47.96% -0.0483 -0.078)
OKLCH	oklch(47.96% 0.092 238.2)
XYZ	xyz(9.7806, 11.2686, 26.0807)
Luminance	0.1127 (WCAG relative)
Temperature	cool
Family	cyan

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
##1F648B	1.00	6.45	3.25	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

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 →