#3650A5
Closest named color: Dusk Blue (#26538D). oklch(45.9% 0.14 267.8), rgb(54, 80, 165).
Aa
White text reads best on this color (7.37:1).
About this color
#3650A5 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.140 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.045 away. White text reads best on it, at 7.37:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.84:1 |
| White text | 7.37:1 |
Values
| HEX | #3650A5 |
| RGB | rgb(54, 80, 165) |
| HSL | hsl(226, 51%, 43%) |
| OKLCH | oklch(45.9% 0.14 267.8) |
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 #3650A5 | 7.37:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #3650A5 | 2.84:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #3650A5 text on white | 7.37:1 | AAA | Lc 85.3 | Fine for body text |
| #3650A5 text on black | 2.84:1 | Fails | Lc -16.7 | 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 800.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F8
oklch(88.5% 0.045 267.4)
-
Step 300
300
#AABFF7
oklch(80.9% 0.083 268.6)
-
Step 400
400
#7D9CF2
oklch(70.6% 0.131 267.9)
-
Step 500
500
#5E81EE
oklch(63.1% 0.168 268)
-
Step 600
600
#4668DC
oklch(55.7% 0.181 267.8)
-
Step 700
700
#3855BF
oklch(49% 0.17 268)
-
Step 800
800 (this color)
#3650A5
oklch(45.9% 0.14 267.8)
-
Step 900
900
#283C7B
oklch(37.6% 0.11 267.6)
-
Step 950
950
#182448
oklch(27.1% 0.069 267.8)
#3650A5 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) | #1E5BA8 | 0.032 |
| Deuteranopia (no green cones) | #0051A3 | 0.035 |
| Tritanopia (no blue cones) | #006473 | 0.115 |
| Achromatopsia (no color) | #565656 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3650A5
#3650A5
oklch(45.9% 0.14 267.8)
- #6E5400
#6E5400
oklch(46% 0.094 87.8)
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 #3650A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.045
- Blueberry #464196 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.048
- Cobalt #1E488F ΔE 0.050
- Twilight #4E518B ΔE 0.053
- Dusky Blue #475F94 ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.063
Use #3650A5 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.