#4165BD
Closest named color: Mid Blue (#276AB3). oklch(52.6% 0.144 265.1), rgb(65, 101, 189).
Aa
White text reads best on this color (5.49:1).
About this color
#4165BD is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.144 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.031 away. White text reads best on it, at 5.49:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.82:1 |
| White text | 5.49:1 |
Values
| HEX | #4165BD |
| RGB | rgb(65, 101, 189) |
| HSL | hsl(223, 49%, 50%) |
| OKLCH | oklch(52.6% 0.144 265.1) |
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 #4165BD | 5.49:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #4165BD | 3.82:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #4165BD text on white | 5.49:1 | AA | Lc 77.2 | Fine for body text |
| #4165BD text on black | 3.82:1 | AA large text | Lc -24.6 | 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 600.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#ACC1EC
oklch(81% 0.065 264.5)
-
Step 400
400
#819FE2
oklch(70.7% 0.104 265.4)
-
Step 500
500
#6286D9
oklch(63.1% 0.132 265.1)
-
Step 600
600 (this color)
#4165BD
oklch(52.6% 0.144 265.1)
-
Step 700
700
#3B5CAC
oklch(49.2% 0.133 265)
-
Step 800
800
#314B8B
oklch(42.7% 0.111 265.4)
-
Step 900
900
#2B3F6F
oklch(37.6% 0.086 265.4)
-
Step 950
950
#192541
oklch(26.9% 0.055 265.3)
#4165BD 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) | #396FC0 | 0.026 |
| Deuteranopia (no green cones) | #2164BB | 0.028 |
| Tritanopia (no blue cones) | #007988 | 0.119 |
| Achromatopsia (no color) | #696969 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4165BD
#4165BD
oklch(52.6% 0.144 265.1)
- #876500
#876500
oklch(52.7% 0.108 85.4)
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 #4165BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.031
- French Blue #436BAD ΔE 0.033
- Windows Blue #3778BF ΔE 0.051
- Iris #6258C4 ΔE 0.052
- Royal Blue #4169E1 ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.059
- Warm Blue #4B57DB ΔE 0.060
Use #4165BD 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.