#1F4F8E#1F4F8E

#1F4F8E is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 43.0% C 0.116 H 256.5°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F8E
RGB	rgb(31, 79, 142)
HSL	hsl(214, 64%, 34%)
HSV	hsv(214, 78%, 56%)
CMYK	cmyk(78.2%, 44.4%, 0%, 44.3%)
CIE-LAB	lab(33.64, 7.35, -39.55)
CIE-LCH	lch(33.64, 40.22, 280.53°)
OKLab	oklab(42.99% -0.0271 -0.1132)
OKLCH	oklch(42.99% 0.116 256.5)
XYZ	xyz(8.2417, 7.8353, 26.6639)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F8E #8E5E1F

analogous

#1F878E #1F4F8E #271F8E

triadic

#1F4F8E #8E1F4F #4F8E1F

tetradic

#1F4F8E #8E1F87 #8E5E1F #1F8E27

square

#1F4F8E #8E1F87 #8E5E1F #1F8E27

split-complementary

#1F4F8E #8E271F #878E1F

monochromatic

#09172A #14335C #1F4F8E #2A6BC0 #4F8AD9

Accessibility & contrast

On white

8.18

#1F4F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1F4F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F8E

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F8E	#FFFFFF	#000000	##FFFFFF
##1F4F8E	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5590

Deuteranopia (green-blind)

#1B4A8D

Tritanopia (blue-blind)

#005E67

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f4f8e;
/* rgb */ color: rgb(31, 79, 142);
/* oklch */ color: oklch(43.0% 0.116 256.5);

Tailwind

colors: {
  custom: {
    50: '#6c7faf',
    500: '#1f4f8e',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f8e;
$custom-light: #6c7faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f8e",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 142
  },
  "hsl": {
    "h": 214.054,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4299,
    "c": 0.11642,
    "h": 256.5
  },
  "luminance": 0.07836
}

Semantic roles & 50–950 ramp

primary

#1F4F8E

secondary

#BB8C4D

accent

#9F41E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F4F8E

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

Preview Lab → · Contrast checker → · Palette generator →