#3657A2
Closest named color: Denim Blue (#3B5B92). oklch(47.2% 0.127 264.2), rgb(54, 87, 162).
Aa
White text reads best on this color (6.90:1).
About this color
#3657A2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.127 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.031 away. White text reads best on it, at 6.90:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.04:1 |
| White text | 6.90:1 |
Values
| HEX | #3657A2 |
| RGB | rgb(54, 87, 162) |
| HSL | hsl(222, 50%, 42%) |
| OKLCH | oklch(47.2% 0.127 264.2) |
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 #3657A2 | 6.90:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #3657A2 | 3.04:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #3657A2 text on white | 6.90:1 | AA | Lc 83.6 | Fine for body text |
| #3657A2 text on black | 3.04:1 | AA large text | Lc -18.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F0
oklch(88.4% 0.034 265.2)
-
Step 300
300
#ADC1E9
oklch(80.9% 0.061 264.2)
-
Step 400
400
#82A0DE
oklch(70.7% 0.097 264.2)
-
Step 500
500
#6287D5
oklch(63.1% 0.125 263.9)
-
Step 600
600
#4A6FC3
oklch(55.6% 0.137 264.5)
-
Step 700
700 (this color)
#3657A2
oklch(47.2% 0.127 264.2)
-
Step 800
800
#314C88
oklch(42.7% 0.105 264.2)
-
Step 900
900
#2B406D
oklch(37.7% 0.082 264)
-
Step 950
950
#192640
oklch(27.1% 0.052 263.2)
#3657A2 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) | #325FA5 | 0.022 |
| Deuteranopia (no green cones) | #1E55A0 | 0.023 |
| Tritanopia (no blue cones) | #006874 | 0.105 |
| Achromatopsia (no color) | #5A5A5A | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3657A2
#3657A2
oklch(47.2% 0.127 264.2)
- #755600
#755600
oklch(47.3% 0.097 84.3)
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 #3657A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.031
- Dusk Blue #26538D ΔE 0.040
- Dusky Blue #475F94 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.046
- Twilight #4E518B ΔE 0.046
- Mid Blue #276AB3 ΔE 0.054
- Denim #3B638C ΔE 0.055
- Cobalt #1E488F ΔE 0.059
Use #3657A2 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.