#1F4D7B#1F4D7B

#1F4D7B is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.2% C 0.092 H 251.1°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F4D7B
RGB	rgb(31, 77, 123)
HSL	hsl(210, 60%, 30%)
HSV	hsv(210, 75%, 48%)
CMYK	cmyk(74.8%, 37.4%, 0%, 51.8%)
CIE-LAB	lab(31.87, 1.15, -30.65)
CIE-LCH	lch(31.87, 30.67, 272.15°)
OKLab	oklab(41.24% -0.0299 -0.0871)
OKLCH	oklch(41.24% 0.092 251.1)
XYZ	xyz(6.7928, 7.0284, 19.7337)
Luminance	0.0703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4D7B #7B4D1F

analogous

#1F7B7B #1F4D7B #1F1F7B

triadic

#1F4D7B #7B1F4D #4D7B1F

tetradic

#1F4D7B #7B1F7B #7B4D1F #1F7B1F

square

#1F4D7B #7B1F7B #7B4D1F #1F7B1F

split-complementary

#1F4D7B #7B1F1F #7B7B1F

monochromatic

#061019 #132E4A #1F4D7B #2B6CAC #448AD0

Accessibility & contrast

On white

8.73

#1F4D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1F4D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4D7B

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4D7B	#FFFFFF	#000000	##FFFFFF
##1F4D7B	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38507D

Deuteranopia (green-blind)

#2B477A

Tritanopia (blue-blind)

#00585E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4d7b;
/* rgb */ color: rgb(31, 77, 123);
/* oklch */ color: oklch(41.2% 0.092 251.1);

Tailwind

colors: {
  custom: {
    50: '#687ea1',
    500: '#1f4d7b',
    950: '#000000',
  },
}

SCSS

$custom: #1f4d7b;
$custom-light: #687ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4d7b",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 123
  },
  "hsl": {
    "h": 210,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.41242,
    "c": 0.09212,
    "h": 251.1
  },
  "luminance": 0.07029
}

Semantic roles & 50–950 ramp

primary

#1F4D7B

secondary

#AE7B48

accent

#9445E3

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#07090F

muted

#7A7B7E

Preview Lab

Preview with #1F4D7B

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

Preview Lab → · Contrast checker → · Palette generator →