#1F487B#1F487B

#1F487B is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 40.0% C 0.098 H 255.3°. Best body text is #FFFFFF at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#1F487B
RGB	rgb(31, 72, 123)
HSL	hsl(213, 60%, 30%)
HSV	hsv(213, 75%, 48%)
CMYK	cmyk(74.8%, 41.5%, 0%, 51.8%)
CIE-LAB	lab(30.29, 4.48, -33.15)
CIE-LCH	lch(30.29, 33.45, 277.69°)
OKLab	oklab(40.01% -0.0248 -0.0946)
OKLCH	oklch(40.01% 0.098 255.3)
XYZ	xyz(6.4563, 6.3554, 19.6215)
Luminance	0.0636 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F487B #7B521F

analogous

#1F767B #1F487B #241F7B

triadic

#1F487B #7B1F48 #487B1F

tetradic

#1F487B #7B1F76 #7B521F #1F7B24

square

#1F487B #7B1F76 #7B521F #1F7B24

split-complementary

#1F487B #7B241F #767B1F

monochromatic

#060F19 #132B4A #1F487B #2B65AC #4483D0

Accessibility & contrast

On white

9.25

#1F487B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#1F487B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F487B

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F487B	#FFFFFF	#000000	##FFFFFF
##1F487B	1.00	9.25	2.27	9.25
#FFFFFF	9.25	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304C7D

Deuteranopia (green-blind)

#22437A

Tritanopia (blue-blind)

#00545B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f487b;
/* rgb */ color: rgb(31, 72, 123);
/* oklch */ color: oklch(40.0% 0.098 255.3);

Tailwind

colors: {
  custom: {
    50: '#687aa1',
    500: '#1f487b',
    950: '#000000',
  },
}

SCSS

$custom: #1f487b;
$custom-light: #687aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f487b",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 123
  },
  "hsl": {
    "h": 213.261,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.40009,
    "c": 0.09777,
    "h": 255.3
  },
  "luminance": 0.06356
}

Semantic roles & 50–950 ramp

primary

#1F487B

secondary

#AE8048

accent

#9C45E3

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07090F

muted

#7A7B7E

Preview Lab

Preview with #1F487B

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

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