#365E9A
Closest named color: Denim Blue (#3B5B92). oklch(48.2% 0.107 258.3), rgb(54, 94, 154).
Aa
White text reads best on this color (6.51:1).
About this color
#365E9A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.107 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.014 away. White text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.22:1 |
| White text | 6.51:1 |
Values
| HEX | #365E9A |
| RGB | rgb(54, 94, 154) |
| HSL | hsl(216, 48%, 41%) |
| OKLCH | oklch(48.2% 0.107 258.3) |
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 #365E9A | 6.51:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #365E9A | 3.22:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #365E9A text on white | 6.51:1 | AA | Lc 82.1 | Fine for body text |
| #365E9A text on black | 3.22:1 | AA large text | Lc -19.8 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ACC2E3
oklch(80.8% 0.053 258.4)
-
Step 400
400
#81A2D5
oklch(70.7% 0.084 258.9)
-
Step 500
500
#618AC9
oklch(63% 0.106 258.7)
-
Step 600
600
#4773B6
oklch(55.5% 0.116 258.6)
-
Step 700
700 (this color)
#365E9A
oklch(48.2% 0.107 258.3)
-
Step 800
800
#2F4F7F
oklch(42.7% 0.089 258.3)
-
Step 900
900
#2A4266
oklch(37.7% 0.069 258.3)
-
Step 950
950
#19273C
oklch(27.1% 0.044 258.3)
#365E9A 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) | #44639C | 0.023 |
| Deuteranopia (no green cones) | #355999 | 0.014 |
| Tritanopia (no blue cones) | #006C74 | 0.090 |
| Achromatopsia (no color) | #5E5E5E | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #365E9A
#365E9A
oklch(48.2% 0.107 258.3)
- #7D5600
#7D5600
oklch(48.3% 0.101 78.2)
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 #365E9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.014
- Dusky Blue #475F94 ΔE 0.022
- Denim #3B638C ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.032
- Peacock Blue #016795 ΔE 0.038
- Dusk Blue #26538D ΔE 0.041
- Twilight #4E518B ΔE 0.046
- Mid Blue #276AB3 ΔE 0.047
Use #365E9A 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.