#4065BF
Closest named color: Mid Blue (#276AB3). oklch(52.7% 0.147 265), rgb(64, 101, 191).
Aa
White text reads best on this color (5.48:1).
About this color
#4065BF is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.147 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.032 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.83:1 |
| White text | 5.48:1 |
Values
| HEX | #4065BF |
| RGB | rgb(64, 101, 191) |
| HSL | hsl(223, 50%, 50%) |
| OKLCH | oklch(52.7% 0.147 265) |
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 #4065BF | 5.48:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #4065BF | 3.83:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #4065BF text on white | 5.48:1 | AA | Lc 77.1 | Fine for body text |
| #4065BF text on black | 3.83:1 | AA large text | Lc -24.7 | 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 600.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CDD9F2
oklch(88.4% 0.037 265.1)
-
Step 300
300
#ACC1EC
oklch(81% 0.065 264.5)
-
Step 400
400
#809FE3
oklch(70.6% 0.106 265)
-
Step 500
500
#6186DB
oklch(63.1% 0.135 265)
-
Step 600
600 (this color)
#4065BF
oklch(52.7% 0.147 265)
-
Step 700
700
#395BAE
oklch(49% 0.138 265)
-
Step 800
800
#304B8C
oklch(42.7% 0.113 265)
-
Step 900
900
#2A3F70
oklch(37.6% 0.088 265)
-
Step 950
950
#192542
oklch(27% 0.057 265.8)
#4065BF 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) | #376FC2 | 0.026 |
| Deuteranopia (no green cones) | #1D64BD | 0.029 |
| Tritanopia (no blue cones) | #007A89 | 0.121 |
| Achromatopsia (no color) | #696969 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4065BF
#4065BF
oklch(52.7% 0.147 265)
- #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 #4065BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.032
- French Blue #436BAD ΔE 0.035
- Windows Blue #3778BF ΔE 0.051
- Iris #6258C4 ΔE 0.052
- Royal Blue #4169E1 ΔE 0.053
- Warm Blue #4B57DB ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.058
Use #4065BF 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.