#3582CC
Closest named color: Water Blue (#0E87CC). oklch(59.5% 0.136 250.5), rgb(53, 130, 204).
Aa
Black text reads best on this color (5.21:1).
About this color
#3582CC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.136 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.020 away. Black text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.21:1 |
| White text | 4.02:1 |
Values
| HEX | #3582CC |
| RGB | rgb(53, 130, 204) |
| HSL | hsl(209, 60%, 50%) |
| OKLCH | oklch(59.5% 0.136 250.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #3582CC | 4.02:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #3582CC | 5.21:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #3582CC text on white | 4.02:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #3582CC text on black | 5.21:1 | AA | Lc -34.5 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DCF1
oklch(88.6% 0.036 249.5)
-
Step 300
300
#A1C4EB
oklch(80.8% 0.067 251.4)
-
Step 400
400
#6CA5E1
oklch(70.7% 0.107 250.7)
-
Step 500
500 (this color)
#3582CC
oklch(59.5% 0.136 250.5)
-
Step 600
600
#1A76C6
oklch(55.7% 0.148 250.5)
-
Step 700
700
#0763AB
oklch(49.2% 0.137 250.3)
-
Step 800
800
#0E518A
oklch(42.8% 0.113 250.2)
-
Step 900
900
#16436F
oklch(37.6% 0.09 251.1)
-
Step 950
950
#0F2841
oklch(27.1% 0.056 250.6)
#3582CC with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #6086CF | 0.043 |
| Deuteranopia (no green cones) | #4978CB | 0.029 |
| Tritanopia (no blue cones) | #00949D | 0.103 |
| Achromatopsia (no color) | #7F7F7F | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3582CC
#3582CC
oklch(59.5% 0.136 250.5)
- #AE6F00
#AE6F00
oklch(59.5% 0.128 70.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #3582CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.020
- Windows Blue #3778BF ΔE 0.031
- Cool Blue #4984B8 ΔE 0.036
- Steel Blue #4682B4 ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.048
- Nice Blue #107AB0 ΔE 0.052
- Blue NCS #118AB2 ΔE 0.054
- Off Blue #5684AE ΔE 0.055
Use #3582CC in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.