#047EC5
Closest named color: Windows Blue (#3778BF). oklch(57.2% 0.142 244.6), rgb(4, 126, 197).
Aa
Black text reads best on this color (4.79:1).
About this color
#047EC5 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.142 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.024 away. Black text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.79:1 |
| White text | 4.37:1 |
Values
| HEX | #047EC5 |
| RGB | rgb(4, 126, 197) |
| HSL | hsl(202, 96%, 39%) |
| OKLCH | oklch(57.2% 0.142 244.6) |
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 #047EC5 | 4.37:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #047EC5 | 4.79:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #047EC5 text on white | 4.37:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #047EC5 text on black | 4.79:1 | AA | Lc -32.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C6DCEF
oklch(88.4% 0.035 244.2)
-
Step 300
300
#9EC6E8
oklch(80.9% 0.064 244.3)
-
Step 400
400
#67A7DC
oklch(70.7% 0.102 244.9)
-
Step 500
500
#3690D2
oklch(63% 0.13 244.5)
-
Step 600
600 (this color)
#047EC5
oklch(57.2% 0.142 244.6)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#0E456B
oklch(37.7% 0.085 244.5)
-
Step 950
950
#0B293F
oklch(27.1% 0.054 244.1)
#047EC5 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) | #5B81C8 | 0.058 |
| Deuteranopia (no green cones) | #4172C4 | 0.040 |
| Tritanopia (no blue cones) | #008F98 | 0.097 |
| Achromatopsia (no color) | #797979 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #047EC5
#047EC5
oklch(57.2% 0.142 244.6)
- #AB6500
#AB6500
oklch(57.2% 0.129 64.7)
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 #047EC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.024
- Water Blue #0E87CC ΔE 0.027
- Nice Blue #107AB0 ΔE 0.033
- Steel Blue #4682B4 ΔE 0.045
- Cool Blue #4984B8 ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.051
- Blue NCS #118AB2 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.057
Use #047EC5 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.