#3697C8
Closest named color: Faded Blue (#658CBB). oklch(64.2% 0.115 234.9), rgb(54, 151, 200).
Aa
Black text reads best on this color (6.41:1).
About this color
#3697C8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.115 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.046 away. Black text reads best on it, at 6.41:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #3697C8 |
| RGB | rgb(54, 151, 200) |
| HSL | hsl(200, 57%, 50%) |
| OKLCH | oklch(64.2% 0.115 234.9) |
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 #3697C8 | 3.27:1 | AA large text | Lc -65.2 | Content text, not long reading |
| Black text on #3697C8 | 6.41:1 | AA | Lc 44.3 | Non-text elements, placeholder text |
| #3697C8 text on white | 3.27:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #3697C8 text on black | 6.41:1 | AA | Lc -42.0 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEB
oklch(88.5% 0.031 234.5)
-
Step 300
300
#9EC7E0
oklch(80.9% 0.056 235.2)
-
Step 400
400
#65AAD1
oklch(70.7% 0.09 234.8)
-
Step 500
500 (this color)
#3697C8
oklch(64.2% 0.115 234.9)
-
Step 600
600
#007DAE
oklch(55.7% 0.118 234.9)
-
Step 700
700
#006993
oklch(49.2% 0.104 234.9)
-
Step 800
800
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#0A4763
oklch(37.6% 0.075 234.9)
-
Step 950
950
#0A2A3A
oklch(27% 0.047 234.3)
#3697C8 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) | #7F96CA | 0.070 |
| Deuteranopia (no green cones) | #6B88C7 | 0.058 |
| Tritanopia (no blue cones) | #00A4A8 | 0.073 |
| Achromatopsia (no color) | #8E8E8E | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3697C8
#3697C8
oklch(64.2% 0.115 234.9)
- #C27843
#C27843
oklch(64.1% 0.115 54.6)
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 #3697C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.046
- Blue NCS #118AB2 ΔE 0.051
- Cool Blue #4984B8 ΔE 0.053
- Water Blue #0E87CC ΔE 0.053
- Dark Sky Blue #448EE4 ΔE 0.055
- Dusty Blue #5A86AD ΔE 0.057
- Off Blue #5684AE ΔE 0.059
- Steel Blue #4682B4 ΔE 0.059
Use #3697C8 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.