#4977D5
Closest named color: Windows Blue (#3778BF). oklch(58.4% 0.153 262.9), rgb(73, 119, 213).
Aa
Black text reads best on this color (4.88:1).
About this color
#4977D5 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.153 and its hue 263°. 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 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.88:1 |
| White text | 4.30:1 |
Values
| HEX | #4977D5 |
| RGB | rgb(73, 119, 213) |
| HSL | hsl(220, 63%, 56%) |
| OKLCH | oklch(58.4% 0.153 262.9) |
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 #4977D5 | 4.30:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #4977D5 | 4.88:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #4977D5 text on white | 4.30:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #4977D5 text on black | 4.88:1 | AA | Lc -32.2 | 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 600.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#A9C1EE
oklch(80.8% 0.069 262.9)
-
Step 400
400
#7CA0E5
oklch(70.7% 0.109 262.8)
-
Step 500
500
#5B87DE
oklch(63.2% 0.14 262.8)
-
Step 600
600 (this color)
#4977D5
oklch(58.4% 0.153 262.9)
-
Step 700
700
#335CB0
oklch(49.1% 0.142 262.7)
-
Step 800
800
#2B4B8F
oklch(42.6% 0.119 263.3)
-
Step 900
900
#274072
oklch(37.8% 0.091 262.8)
-
Step 950
950
#172643
oklch(27.2% 0.058 262.5)
#4977D5 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) | #4A81D9 | 0.027 |
| Deuteranopia (no green cones) | #3274D3 | 0.023 |
| Tritanopia (no blue cones) | #008D9B | 0.127 |
| Achromatopsia (no color) | #7A7A7A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4977D5
#4977D5
oklch(58.4% 0.153 262.9)
- #9E7300
#9E7300
oklch(58.3% 0.12 82.4)
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 #4977D5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.039
- Royal Blue #4169E1 ΔE 0.044
- Water Blue #0E87CC ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.061
- Cerulean Blue #056EEE ΔE 0.062
- Soft Blue #6488EA ΔE 0.063
- Cool Blue #4984B8 ΔE 0.063
- Clear Blue #247AFD ΔE 0.063
Use #4977D5 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.