#4E7FCF
Closest named color: Windows Blue (#3778BF). oklch(60% 0.134 259.7), rgb(78, 127, 207).
Aa
Black text reads best on this color (5.26:1).
About this color
#4E7FCF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.134 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.039 away. Black text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.26:1 |
| White text | 3.99:1 |
Values
| HEX | #4E7FCF |
| RGB | rgb(78, 127, 207) |
| HSL | hsl(217, 57%, 56%) |
| OKLCH | oklch(60% 0.134 259.7) |
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 #4E7FCF | 3.99:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #4E7FCF | 5.26:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #4E7FCF text on white | 3.99:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #4E7FCF text on black | 5.26:1 | AA | Lc -34.6 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A8C2EB
oklch(80.9% 0.065 259.4)
-
Step 400
400
#7AA1E2
oklch(70.7% 0.105 260.3)
-
Step 500
500 (this color)
#4E7FCF
oklch(60% 0.134 259.7)
-
Step 600
600
#3C71C7
oklch(55.6% 0.145 259.6)
-
Step 700
700
#2E5EAC
oklch(49.1% 0.135 259.7)
-
Step 800
800
#274D8B
oklch(42.6% 0.112 259.7)
-
Step 900
900
#24416F
oklch(37.7% 0.087 259.3)
-
Step 950
950
#162641
oklch(27% 0.055 260.3)
#4E7FCF 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) | #5C86D2 | 0.026 |
| Deuteranopia (no green cones) | #4A7ACD | 0.015 |
| Tritanopia (no blue cones) | #00919D | 0.112 |
| Achromatopsia (no color) | #7F7F7F | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E7FCF
#4E7FCF
oklch(60% 0.134 259.7)
- #A77600
#A77600
oklch(60% 0.124 79.6)
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 #4E7FCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.039
- Water Blue #0E87CC ΔE 0.041
- Cool Blue #4984B8 ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.046
- Soft Blue #6488EA ΔE 0.053
- Off Blue #5684AE ΔE 0.057
- Faded Blue #658CBB ΔE 0.060
Use #4E7FCF 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.