#4293CF
Closest named color: Dark Sky Blue (#448EE4). oklch(64% 0.12 243.8), rgb(66, 147, 207).
Aa
Black text reads best on this color (6.30:1).
About this color
#4293CF is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.120 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.038 away. Black text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #4293CF |
| RGB | rgb(66, 147, 207) |
| HSL | hsl(206, 59%, 54%) |
| OKLCH | oklch(64% 0.12 243.8) |
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 #4293CF | 3.33:1 | AA large text | Lc -65.9 | Content text, not long reading |
| Black text on #4293CF | 6.30:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #4293CF text on white | 3.33:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #4293CF text on black | 6.30:1 | AA | Lc -41.3 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A1C6E4
oklch(81% 0.058 243)
-
Step 400
400
#6CA7D7
oklch(70.7% 0.094 244.2)
-
Step 500
500 (this color)
#4293CF
oklch(64% 0.12 243.8)
-
Step 600
600
#1379B9
oklch(55.5% 0.131 243.9)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#095381
oklch(42.6% 0.1 243.9)
-
Step 900
900
#144568
oklch(37.6% 0.079 244.1)
-
Step 950
950
#0E293D
oklch(27.1% 0.05 243.6)
#4293CF 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) | #7894D2 | 0.055 |
| Deuteranopia (no green cones) | #6587CE | 0.043 |
| Tritanopia (no blue cones) | #00A2A8 | 0.087 |
| Achromatopsia (no color) | #8D8D8D | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4293CF
#4293CF
oklch(64% 0.12 243.8)
- #BE7B33
#BE7B33
oklch(64% 0.12 64.3)
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 #4293CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.038
- Faded Blue #658CBB ΔE 0.041
- Water Blue #0E87CC ΔE 0.046
- Cool Blue #4984B8 ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.049
- Steel Blue #4682B4 ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.056
- Off Blue #5684AE ΔE 0.057
Use #4293CF 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.