#1F4D8B#1F4D8B

#1F4D8B is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.3% C 0.115 H 256.9°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F4D8B
RGB	rgb(31, 77, 139)
HSL	hsl(214, 64%, 33%)
HSV	hsv(214, 78%, 55%)
CMYK	cmyk(77.7%, 44.6%, 0%, 45.5%)
CIE-LAB	lab(32.84, 7.49, -38.99)
CIE-LCH	lch(32.84, 39.70, 280.88°)
OKLab	oklab(42.31% -0.0259 -0.1116)
OKLCH	oklch(42.31% 0.115 256.9)
XYZ	xyz(7.8774, 7.4622, 25.4463)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4D8B #8B5D1F

analogous

#1F838B #1F4D8B #271F8B

triadic

#1F4D8B #8B1F4D #4D8B1F

tetradic

#1F4D8B #8B1F83 #8B5D1F #1F8B27

square

#1F4D8B #8B1F83 #8B5D1F #1F8B27

split-complementary

#1F4D8B #8B271F #838B1F

monochromatic

#091627 #143159 #1F4D8B #2A69BD #4D88D7

Accessibility & contrast

On white

8.42

#1F4D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1F4D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4D8B

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4D8B	#FFFFFF	#000000	##FFFFFF
##1F4D8B	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E538D

Deuteranopia (green-blind)

#1A498A

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f4d8b;
/* rgb */ color: rgb(31, 77, 139);
/* oklch */ color: oklch(42.3% 0.115 256.9);

Tailwind

colors: {
  custom: {
    50: '#6b7ead',
    500: '#1f4d8b',
    950: '#000000',
  },
}

SCSS

$custom: #1f4d8b;
$custom-light: #6b7ead;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4d8b",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 139
  },
  "hsl": {
    "h": 214.444,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.42308,
    "c": 0.1146,
    "h": 256.9
  },
  "luminance": 0.07463
}

Semantic roles & 50–950 ramp

primary

#1F4D8B

secondary

#BA8B4C

accent

#A041E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1F4D8B

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

Preview Lab → · Contrast checker → · Palette generator →