#3658A7
Closest named color: Denim Blue (#3B5B92). oklch(47.8% 0.133 264.4), rgb(54, 88, 167).
Aa
White text reads best on this color (6.75:1).
About this color
#3658A7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.133 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.037 away. White text reads best on it, at 6.75:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.11:1 |
| White text | 6.75:1 |
Values
| HEX | #3658A7 |
| RGB | rgb(54, 88, 167) |
| HSL | hsl(222, 51%, 43%) |
| OKLCH | oklch(47.8% 0.133 264.4) |
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 #3658A7 | 6.75:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #3658A7 | 3.11:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #3658A7 text on white | 6.75:1 | AA | Lc 83.0 | Fine for body text |
| #3658A7 text on black | 3.11:1 | AA large text | Lc -19.0 | 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
#F2F5FB
oklch(97% 0.009 264.5)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CDD9F2
oklch(88.4% 0.037 265.1)
-
Step 300
300
#ACC1EB
oklch(80.9% 0.064 264.1)
-
Step 400
400
#80A0E1
oklch(70.8% 0.102 263.9)
-
Step 500
500
#6186D9
oklch(63% 0.132 264.7)
-
Step 600
600
#486FC6
oklch(55.7% 0.142 264.2)
-
Step 700
700 (this color)
#3658A7
oklch(47.8% 0.133 264.4)
-
Step 800
800
#304C8B
oklch(42.8% 0.11 264.3)
-
Step 900
900
#2A3F6F
oklch(37.6% 0.087 264.8)
-
Step 950
950
#192541
oklch(26.9% 0.055 265.3)
#3658A7 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) | #3061AA | 0.024 |
| Deuteranopia (no green cones) | #1957A5 | 0.025 |
| Tritanopia (no blue cones) | #006A77 | 0.109 |
| Achromatopsia (no color) | #5B5B5B | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3658A7
#3658A7
oklch(47.8% 0.133 264.4)
- #765700
#765700
oklch(47.6% 0.098 84.5)
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 #3658A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.045
- Dusk Blue #26538D ΔE 0.048
- Mid Blue #276AB3 ΔE 0.050
- Twilight #4E518B ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.053
- French Blue #436BAD ΔE 0.057
- Denim #3B638C ΔE 0.060
Use #3658A7 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.