#1F587C#1F587C

#1F587C is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.1% C 0.083 H 240.4°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#1F587C
RGB	rgb(31, 88, 124)
HSL	hsl(203, 60%, 30%)
HSV	hsv(203, 75%, 49%)
CMYK	cmyk(75%, 29%, 0%, 51.4%)
CIE-LAB	lab(35.45, -5.50, -25.63)
CIE-LCH	lch(35.45, 26.21, 257.90°)
OKLab	oklab(44.08% -0.0411 -0.0724)
OKLCH	oklch(44.08% 0.083 240.4)
XYZ	xyz(7.6915, 8.7251, 20.3436)
Luminance	0.0873 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F587C #7C431F

analogous

#1F7C71 #1F587C #1F297C

triadic

#1F587C #7C1F58 #587C1F

tetradic

#1F587C #711F7C #7C431F #297C1F

square

#1F587C #711F7C #7C431F #297C1F

split-complementary

#1F587C #7C1F29 #7C711F

monochromatic

#07131A #13354B #1F587C #2B7BAD #459AD0

Accessibility & contrast

On white

7.65

#1F587C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1F587C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F587C

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F587C	#FFFFFF	#000000	##FFFFFF
##1F587C	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587E

Deuteranopia (green-blind)

#3B4F7B

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f587c;
/* rgb */ color: rgb(31, 88, 124);
/* oklch */ color: oklch(44.1% 0.083 240.4);

Tailwind

colors: {
  custom: {
    50: '#6887a2',
    500: '#1f587c',
    950: '#000000',
  },
}

SCSS

$custom: #1f587c;
$custom-light: #6887a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f587c",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 124
  },
  "hsl": {
    "h": 203.226,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.4408,
    "c": 0.08324,
    "h": 240.4
  },
  "luminance": 0.08726
}

Semantic roles & 50–950 ramp

primary

#1F587C

secondary

#AF7048

accent

#8245E3

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1F587C

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

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