#1F538C#1F538C

#1F538C is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.8% C 0.109 H 253.3°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#1F538C
RGB	rgb(31, 83, 140)
HSL	hsl(211, 64%, 34%)
HSV	hsv(211, 78%, 55%)
CMYK	cmyk(77.9%, 40.7%, 0%, 45.1%)
CIE-LAB	lab(34.74, 3.91, -36.56)
CIE-LCH	lch(34.74, 36.77, 276.11°)
OKLab	oklab(43.81% -0.0313 -0.1044)
OKLCH	oklch(43.81% 0.109 253.3)
XYZ	xyz(8.3902, 8.3703, 25.9793)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F538C #8C581F

analogous

#1F898C #1F538C #211F8C

triadic

#1F538C #8C1F53 #538C1F

tetradic

#1F538C #8C1F89 #8C581F #1F8C21

square

#1F538C #8C1F89 #8C581F #1F8C21

split-complementary

#1F538C #8C211F #898C1F

monochromatic

#091828 #14355A #1F538C #2A71BE #4E90D8

Accessibility & contrast

On white

7.85

#1F538C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1F538C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F538C

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F538C	#FFFFFF	#000000	##FFFFFF
##1F538C	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38578E

Deuteranopia (green-blind)

#264D8B

Tritanopia (blue-blind)

#006068

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f538c;
/* rgb */ color: rgb(31, 83, 140);
/* oklch */ color: oklch(43.8% 0.109 253.3);

Tailwind

colors: {
  custom: {
    50: '#6b82ae',
    500: '#1f538c',
    950: '#000000',
  },
}

SCSS

$custom: #1f538c;
$custom-light: #6b82ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f538c",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 140
  },
  "hsl": {
    "h": 211.376,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.43809,
    "c": 0.10896,
    "h": 253.3
  },
  "luminance": 0.08371
}

Semantic roles & 50–950 ramp

primary

#1F538C

secondary

#BB864C

accent

#9841E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F538C

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

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